| HS Code | 263328 |
| Product Name | FAiR-NTD3001 |
| Manufacturer | FUJIFILM |
| Product Type | ArF negative-tone development (NTD) photoresist |
| Exposure Tool Compatibility | 193 nm ArF laser; immersion-capable |
| Resist Tone | Negative tone |
| Base Resin Chemistry | Methacrylate-based polymer with alicyclic and lactone units |
| Developer Compatibility | Organic solvent developer process |
| Imaging Performance | High contrast and low LWR for nanoscale lithography |
| Pattern Application | Contact-hole, trench, and line patterns at advanced nodes |
| Etch Resistance | Alicyclic structure provides enhanced dry-etch resistance |
As an accredited ArF Photoresist FUJIFILM FAiR-NTD3001 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in sealed 1-liter HDPE bottles under nitrogen purge, ArF photoresist FAiR-NTD3001 is light-sensitive and stored upright. |
| Container Loading (20′ FCL) | 20′ FCL container loading of ArF Photoresist FUJIFILM FAiR-NTD3001, packed in sealed containers on pallets, secured for safe transport. |
| Shipping | Ship ArF photoresist FUJIFILM FAiR-NTD3001 as hazardous, temperature-controlled chemical cargo. Protect from direct light, heat, and moisture. Use dedicated, grounded containers with proper UN-rated packaging and labels. Maintain stability during transit, avoid extreme temperatures, and follow all applicable transport regulations for photoresist materials. |
| Storage | Store ArF photoresist FUJIFILM FAiR-NTD3001 in its original tightly sealed container in a clean, dry, well-ventilated area. Keep away from direct sunlight, heat sources, and open flames. Maintain recommended temperature (typically 15-25°C); do not freeze. Avoid exposure to oxidizing agents. Use proper grounding during transfer. Ensure good ventilation when handling. |
| Shelf Life | FUJIFILM FAiR-NTD3001 shelf life is 12 months from manufacture when kept unopened at 10–30°C, protected from light. |
| Standard or regulation | Scope |
|---|---|
| SEMI S2-0718 | Environmental, health, and safety guidelines for semiconductor manufacturing equipment |
| SEMI S8-0218 | Ergonomics engineering of semiconductor manufacturing equipment |
| ISO 14644-1:2015 | Classification of air cleanliness by particle concentration |
| REACH (EC) No 1907/2006 | Registration, evaluation, authorisation and restriction of chemical substances |
| IEC 62474 | Material declaration for products of the electrotechnical industry |
In DRAM storage node contact patterning, the NTD resist is applied on a stacked film system of spin-on carbon, silicon oxynitride, and sacrificial oxide, where the dark-field mask prints an array of contact holes at the storage capacitor interface. The substrate stack is more reflective than logic front-end films, so bottom anti-reflective coating and spin-on carbon are tuned to suppress reflected light; film thickness of the resist is typically confirmed with an inline reflectometer before exposure to avoid standing wave effects. Exposure dose and focus are set by measuring the post-develop contact hole diameter on a CD-SEM and by fitting a Bossung model to top-down and cross-section data. A production-scale limitation on a 300 mm wafer track is the local uniformity of the organic solvent developer: if puddle volume and drain rate deviate, the hole array edge densifies differently from the center, producing a radial critical dimension signature that cannot be fully corrected by scanner dose profile. The process condition set for storage node contacts includes a post-exposure bake in the 90–110 °C range for 60 s and an anhydrous n-butyl acetate development step, followed by a rinse cycle with a low-surface-tension alcohol. The terminal product is a DRAM die where the etched contact holes are later filled with a titanium nitride barrier and tungsten plug, connecting the cell transistor source/drain to the capacitor lower electrode. Compliance expectations for memory fabs include metal contamination control by total reflection X-ray fluorescence with Na, K, Ca, and Fe typically specified at less than 1 × 1010 atoms/cm2, although the exact limit is set by the customer process integration group rather than by a single public standard. The resist has operational limitations on chromium nitride hardmask substrates unless an adhesion promoter layer is inserted; otherwise, scumming at the substrate-hardmask interface reduces the effective contact area and shifts etch bias.
When 3D NAND flash processing moves to high-rise staircase terrace contacts, the underlayers are carbon-rich hardmasks over alternating oxide and nitride or oxide and polysilicon stacks. The FAiR-NTD3001 film is coated at a thickness of 120–160 nm in this application because the resist must survive a longer etch into the multilayer stack; thickness is confirmed by multi-point spectroscopic ellipsometry on monitor wafers. The coating process often includes a pre-wet solvent to reduce edge bead and avoid microbubble defects on 300 mm wafers. Soft bake is extended to the upper end of the 100–130 °C range, but excessive bake temperature shifts the acid diffusion length during post-exposure bake and lowers the contact hole edge acuity. Exposure is performed on an ArF immersion scanner with a dark-field reticle; the negative tone development step uses an organic solvent puddle that selectively removes unexposed regions and leaves relatively straight sidewalls in the developed contact holes. After development, the resist is subjected to a fluorocarbon-based dry etch to open the underlying spin-on carbon, and the resist itself is consumed partially during the carbon mask open step; etch selectivity is therefore a process variable that must be verified with cross-section SEM. The terminal products are 3D NAND chips used in solid-state drives and enterprise storage systems, where the contact holes connect the bit line and word line driver circuitry to the memory array. A practical incompatibility is residual amine contamination from some silicon nitride deposition tools: if airborne amines accumulate on the substrate surface, the chemically amplified resist may form a top skin that does not develop cleanly in the exposed areas. In fabs running mixed oxide/nitride film sequences, queuing time between deposition and photoresist coating is held below 2 hours unless a protective topcoat is used. Material declaration for restricted substances in the resist and developer is maintained under IEC 62474, and the fab release includes anion and cation analysis by ion chromatography. Published data for FAiR-NTD3001 under every 3D NAND stack combination is limited; process qualification is performed on a layer-specific basis.In back-end-of-line dual damascene patterning, the NTD resist is applied after a spin-on hardmask stack on porous ultralow-k dielectric films with k value near 2.4. The low surface energy and open porosity of the dielectric create adhesion and resist migration issues that are not observed on dense oxide; a common integration approach is to pre-treat the ultralow-k film with a short argon plasma or to apply a conformal adhesion promoter before coating. FAiR-NTD3001 is spin-coated to 90–110 nm thickness and exposed with a 193 nm immersion scanner using a via-first or trench-first dual damascene reticle set. The dark-field via mask in negative tone development improves the image log-slope of small isolated and dense via arrays, but optical proximity effects at the via-to-trench transition require mask biasing and often a dedicated sub-resolution assist feature set. The develop step uses n-butyl acetate puddle development with a spin-speed profile that controls developer contact time uniformity across the wafer; a low-surface-tension rinse is required because the resist patterns have aspect ratios above 2:1 after development and are prone to capillary collapse during spin dry. After etch transfer into the spin-on carbon and inorganic hardmask, the resist is removed and the dual damascene structure is filled with copper barrier and seed, followed by electrochemical deposition and chemical mechanical planarization. The terminal product is the interconnect stack of a logic or memory device, where via resistance and electromigration lifetime are directly influenced by the post-etch via profile generated from the resist mask. Compliance for BEOL processing includes limits on metal ion contamination because Cu and alkali ions diffuse into the ultralow-k dielectric and increase leakage current; the resist lot is released only after analytical testing confirms anion and cation levels below the fab-specific thresholds, using inductively coupled plasma mass spectrometry or ion chromatography. A process limitation occurs if the ultralow-k film is hydrophobic and the n-butyl acetate developer does not wet uniformly; this appears as a radial pattern of missing vias at the wafer edge and is corrected by surface pre-treatment, not by increasing developer concentration.
Backside power delivery network integration uses wafer thinning and deep silicon etch to create large through-silicon or backside vias that connect buried power rails to the package or to backside decoupling capacitors. Although this application is less common than front-end contacts, ArF immersion NTD resists are evaluated as an etch mask because the dark-field via pattern benefits from the sidewall profile and the high contrast of negative tone development in thick films. In this context, FAiR-NTD3001 is coated on a wafer that has been bonded to a carrier wafer and thinned to the target silicon thickness; the resist film thickness may be increased to 150–200 nm to provide sufficient etch budget for deep silicon etching. The backside surface roughness and the presence of bonding adhesive edge remain critical: coating uniformity must be mapped by multi-point ellipsometry because the thinned wafer can bow, and the track may require a slower spin speed and a longer soft bake to prevent solvent trapping near the wafer edge. Exposure is performed on a 193 nm immersion scanner; the backside alignment marks are used for overlay control, and the scanner overlay budget is tighter than the front-end contact layer because a misaligned via in the power delivery network can short to adjacent signal lines. The organic developer process is similar to other NTD applications, but the larger via dimensions reduce the risk of capillary collapse; instead the primary defect mode is incomplete development at the via bottom when the developer puddle is too short or when the wafer was stored under uncontrolled humidity before develop. The terminal product is a high-performance logic die with backside power delivery, used in data center processors and mobile application processors where power integrity is a limiting constraint. REACH (EC) No 1907/2006 registration applies to the developer solvents and to the resist monomers supplied in the European Economic Area, and fab chemical handling follows SEMI S2-0718 equipment safety requirements for wet benches and tracks. Since published process data for this specific formulation in backside via etching is limited, integration engineers perform split-lot evaluation with cross-section SEM and electrical test structures before high-volume ramp. The resist must be stripped cleanly from deep vias after etch; oxygen-based plasma ashing with endpoint detection is typically used, but prolonged ash can damage exposed low-k surfaces and must be revalidated after any changes to the carrier wafer adhesive.
For OPC model calibration and design-technology co-optimization vehicles, the resist model must capture the same tone, diffusion, and developer characteristics as the production material. Test reticles contain variable pitch line/space gratings, contact arrays with programmed mask biases, and two-dimensional patterns used to fit resist model parameters. FAiR-NTD3001 is processed on optimized wafers with a uniform oxide or nitride substrate; film thickness is deliberately varied across a focus-exposure matrix to separate optical contrast effects from acid diffusion and developer loading. Critical dimension data are collected by top-down CD-SEM at 50–100 measurement points per die, and cross-section SEM is used to validate sidewall angle and residual underlayer thickness for the model boundary conditions. The n-butyl acetate developer temperature is controlled to ±0.5 °C because dissolution rate is temperature-sensitive; recirculation temperature control on the develop module and developer replacement after a set number of wafers prevent drift in the calibration dataset. OPC calibration work does not produce an end-use die; instead it generates the lithographic model and recipe settings used for mask tape-out and process window verification on production lots. A practical concern is the storage stability of the resist lot: if a calibration lot is older than its qualified shelf life, the dark loss and sensitivity may drift enough to invalidate the model, so raw chemical date-code tracking and in-line dose-to-size monitoring are mandatory. The operational boundary is that OPC model calibration using a specific resist does not transfer to a different resist or developer system without re-calibration; even small changes in the post-exposure bake temperature change the effective acid diffusion length and the predicted CD bias on curved mask edges. The calibration flow is maintained under the fab quality management system, and analytical release of the resist lot follows the same trace metal and particle specifications used for production wafers.
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FUJIFILM FAiR-NTD3001 is an argon fluoride photoresist formulated for negative tone development on 300 mm semiconductor substrates. The material is exposed at 193 nm using ArF excimer or ArF immersion scanners with projection optics up to 1.35 numerical aperture. In negative tone development, the resist film is coated, post-apply baked, exposed through a dark-field mask for trench and contact layers, post-exposure baked, and developed in an organic solvent such as n-butyl acetate. The solvent developer removes unexposed regions that remain soluble in the organic developer, while exposed regions become sufficiently polar to resist dissolution. The result is reversed tone relative to conventional positive-tone development with 2.38 wt% tetramethylammonium hydroxide. FAiR-NTD3001 is typically dispensed on a coater/developer track equipped with solvent-compatible developer bowls, organic waste separation, and low-humidity wafer handling. The photoresist is intended for critical dark-field mask levels where sub-50 nm half-pitch resolution is required. The use of an organic developer lowers surface tension during drying and reduces the capillary force responsible for pattern collapse in high-aspect-ratio features. In high-volume manufacturing, the resist is processed on 300 mm wafers through spin-coating, edge bead removal, and bake sequences that must be tuned to the specific film thickness target. Typical ArF NTD films range from 60 nm to 150 nm, but the exact lot-specific viscosity and solvent ratio are reported on the supplier certificate of analysis. Without a certificate of analysis, broader class data from ArF immersion resists should be used for engineering feasibility studies.
In positive-tone development, the bright-field mask exposes the spaces around a line, and the exposed resist is removed by aqueous base. For trench and contact arrays, positive-tone development requires printing a small dark space in a bright field; the resulting aerial image often has lower normalized image log slope at the feature edge. Negative tone development inverts the mask polarity, so the trench itself is defined by an exposed dark feature that remains after organic development. This increases aerial image contrast for dark-field structures and can extend depth of focus. In optical lithography simulations at 193 nm wavelength, 1.35 NA, and annular illumination, NTD contact arrays have shown improved process window compared with positive-tone development, although the magnitude depends on mask bias, source shape, and photoresist acid diffusion length. For FAiR-NTD3001, the exact process window at a given pitch must be determined on the production scanner and track; published data for this specific formulation is limited. The process window should be evaluated by measuring bossung plots with a CD-SEM in accordance with the facility’s statistical process control plan, using a focus step of 10 nm and an exposure dose step of 0.2 mJ/cm² or smaller.
| Process parameter | Positive-tone ArF development | Negative-tone development using FAiR-NTD3001 |
|---|---|---|
| Developer | 2.38 wt% tetramethylammonium hydroxide | n-butyl acetate or solvent developer |
| Developer surface tension at 25 °C | about 72 mN/m | about 24–26 mN/m |
| Mask tone for trench layer | bright field, exposed spaces removed | dark field, exposed trench remains |
| Pattern collapse driving force | capillary pressure from aqueous rinse in high-aspect-ratio lines | reduced capillary pressure due to lower surface tension organic solvent |
The resist design for negative tone development must balance photoacid generator conversion, quencher loading, and polymer solubility contrast. Exposed regions in ArF NTD resists become sufficiently polar to resist dissolution in n-butyl acetate, while unexposed regions dissolve cleanly. If the quencher concentration is too high, the exposed region may retain enough solubility to cause scum. If the quencher concentration is too low, acid diffusion can degrade line width roughness and reduce process margin. FAiR-NTD3001 is designed for dark-field layers where this tone inversion provides the greatest benefit. However, the exact formulation details are proprietary, and published quantitative specification sheets for this specific resist grade are limited.
Processing FAiR-NTD3001 requires organic development modules. The developer n-butyl acetate has flash point 22 °C and lower explosive limit 1.7 vol%, requiring exhaust monitoring and solvent-compatible electrical classification. High-volume 300 mm tracks such as TEL Lithius Pro V or SCREEN SOKUDO DUO have solvent developer nozzles, waste segregation, and in-line filtration. Developer filtration at point-of-use typically uses 0.05 μm or smaller high-density polyethylene membranes to reduce particle-related defects. The photoresist itself is filtered through 0.03 μm or finer filters during dispense. In high-volume lines, microbubble formation in n-butyl acetate dispense lines can cause localized undeveloped residues; in-line degassing to dissolved oxygen below 2 ppm is used. Bake uniformity is critical because post-exposure bake temperature nonuniformity of 0.1 °C may shift critical dimension by several tenths of a nanometer, which is significant at advanced nodes. Hotplate temperatures for ArF NTD resists are typically in the 90 °C to 130 °C range, but the exact value must be taken from the supplier’s process recommendation. Exhaust airflow and airborne molecular contamination control below 1 ppb amine are required to prevent T-topping or developer residue. If relative humidity exceeds 60%, a dehydration bake is mandatory before coat.
On actual 300 mm manufacturing lines, early qualification of ArF NTD resists frequently reveals defect modes that are not visible in simulation. These include edge bead removal failure caused by solvent developer wicking into the edge exclusion zone, resist residue on the coat bowl due to inadequate solvent rinse, and decreased thickness uniformity from nonuniform exhaust during spin-coating. For FAiR-NTD3001, a solvent-compatible edge bead removal rinse should be validated on the specific track; a two-step edge rinse with PGMEA and n-butyl acetate is often required. The edge exclusion width is typically 2 mm, but the value depends on the scanner and wafer handling. In-line wafer inspection with a broadband plasma or laser scattering tool at 0.1 μm sensitivity is recommended during qualification. Batch-to-batch variance in metal contamination and particle counts should be monitored against the supplier certificate of analysis using ICP-MS and liquid particle counting. Without a supplier certificate of analysis, no lot should be released to production because the exact limits for FAiR-NTD3001 may differ from the generic ArF resist class.
Substitution of FAiR-NTD3001 for a positive-tone ArF resist is not a standalone resist change. It requires mask tape-out changes because the mask tone must be inverted for dark-field layers. Optical proximity correction models must be recalibrated for the negative tone development response. The etch transfer stack may also need adjustment because the printed feature sidewall angle and resist loss during etch differ from positive-tone patterns. Contact hole and trench layers benefit from the tone inversion, but the resist scum risk increases if the organic developer cannot fully dissolve unexposed resist at the bottom of narrow features. Process engineers should compare the through-pitch behavior of FAiR-NTD3001 with previously used NTD resists. Differences from earlier NTD grades may include lower outgassing in vacuum, reduced line width roughness after etch, and different developer compatibility with underlying spin-on carbon. For example, an underlying spin-on carbon layer that is soluble in n-butyl acetate would be attacked during development, causing intermixing. Therefore, the exact underlayer stack must be screened by FTIR or ellipsometric thickness change after a developer-only immersion test. In published technical disclosures, FUJIFILM positions FAiR-NTD3001 as a next-generation negative tone development resist with optimized solubility contrast and defectivity control, but specific comparative numerical data are limited. For exact process qualification, a resist screening matrix with 3 coat thicknesses, 5 post-exposure bake temperatures, and 7 exposure doses is recommended.
Transfer of the developed pattern into a silicon oxide or silicon nitride hardmask requires fluorocarbon-based reactive ion etch. The initial organic resist loss and post-etch line width roughness depend on the polymer protection ratio, photoacid generator loading, and quencher loading in FAiR-NTD3001. Because exact formulation details are proprietary, only lot-to-lot comparison on a production etcher is valid. A typical ArF NTD resist etch loss of 10–30 nm is observed with 30–60 s etch times in dual-frequency capacitive etchers, but published data for this specific resist is limited. The post-etch line width roughness should be measured by CD-SEM at 10 sites per wafer and compared with the pre-etch line width roughness to separate lithography and etch contributions.
For production release, lot data should be checked against the supplier certificate of analysis for total metals, particles, viscosity, water content, and solvent composition. A representative CoA for ArF NTD resists includes ICP-MS trace metal analysis with reporting limits below 1 ppb for critical metals such as Na, Mg, Al, K, Ca, Fe, Cu, and Zn. Particle counts are measured by laser particle counting at 0.15 μm and should be below 50 particles/mL. Viscosity is determined by cone-and-plate viscometry at 25 °C per ASTM D4287, with lot-to-lot variation typically controlled within ±0.05 cP. Water content is measured by Karl Fischer titration per ASTM E203, with a limit commonly below 500 ppm. Solvent ratio is measured by gas chromatography with flame ionization detection. These are not substitute specifications for FAiR-NTD3001 unless confirmed by the supplier’s CoA; they represent the engineering envelope used to evaluate ArF photoresist lots. The material should be stored in sealed containers at 5 °C to 10 °C and warmed to 21 °C to 24 °C before use. Do not freeze. Shelf life after opening is typically shorter than the unopened shelf life because water uptake and airborne contamination can alter photospeed. Avoid combination with amine-based additives or uncontrolled cleanroom air because amine surface adsorption can inhibit the photoacid reaction at the resist surface.
