Polycrystalline Material Growth TRIZ Cases

An edge-excluded GaN-on-SOI substrate with an AlN barrier suppresses Si-Ga reaction marks during epitaxy, improving yield and reducing contamination.

A divided reactor uses halogen gas in the lower chamber during silicon deposition to stop chuck-side buildup, protect wafers, and sustain tool reliability.

Non-right-angle semipolar sapphire and nitride orientations prevent cracking and peeling, enabling thick group III nitride epitaxy.

A thin thermal oxide plus ALD low-κ stack passivates the GAA interface, cuts bulk traps, and improves transistor breakdown reliability.

Mixed acid extraction and ICP-MS quantify metal contamination on silicon carbide members, helping set cleaning conditions for cleaner silicon wafers.

Selective laser melting controls cooling and directional solidification to form aligned rare earth magnet grains with higher coercivity and less waste.

Epitaxial lateral overgrowth on a masked seed region cuts GaN stress, surface defects, and adhesion issues on mismatched substrates.

A tapered multi-layer mask structure terminates GaN dislocations during epitaxy, enabling larger nucleation area and higher-quality growth.

Coexisting crystal phases in a single-composition NiMH alloy improve low-temperature discharge while limiting corrosion that shortens cycle life.

Surface imaging detects uncracked regions after subsurface laser damage, enabling depth or power adjustment for lower-loss crystalline wafer separation.

Controlled thermal gradients and impurity removal enable large AlN crystals with high UV transparency at practical growth rates.

Weak bonding and stress-driven separation let GaN films grow thicker after sapphire lift-off, improving substrate quality and cost.

High-Brix CMP and multicarboxylic organic acid treatment cut pits, screw dislocations, and metal impurities on silicon carbide substrates.

A controlled oxygen atomic layer after HF oxide removal enables stable silicon epitaxy with stronger gettering and fewer crystal defects.

Multiple attenuated sub-beams are overlapped into a uniform line beam to reduce angular spread and improve amorphous silicon crystallization margin.

Multi-step RTA controls oxygen diffusion to form a denuded zone, stabilize BMD density, and reduce OSF defects in silicon wafers.

Porous GaN pseudo-substrates relax strained InGaN layers without crystal defects, enabling lattice control for color-tunable LEDs and other III-nitride devices.

A two-step milling and oxidation route functionalizes graphene edges to improve solvent dispersibility while preserving conductivity.

A liquid-metal Schottky contact enables non-destructive large-wafer point defect mapping while intermittent voltage improves capacitance measurement accuracy.

Inclined-interface epitaxy removes the (0001) plane faster, lowering surface dislocation density while shortening mirror-surface growth time.

Controlled AlN nucleation thickness and GaN crystallinity cut dislocations, impurities, and buffer leakage in nitride HEMTs.

A three-size cathode particle mix raises compacted density while limiting elongation and brittle fracture in lithium-ion electrode plates.

A two-step sintering route adds a boron-carbon coating to high-nickel cobalt-free cathodes, improving stability, rate capability, and cycle life.

A self-assembled boron arsenide polymer composite resolves the conductivity-compliance tradeoff for flexible thermal interfaces.

A split reactor uses upper-chamber silicon deposition and lower-chamber halogen etching to limit internal films, nodules, and wafer damage.

Using lower-quality SiC as the base and a 4H-SiC surface layer reduces heterojunctions, simplifies processing, and preserves ohmic contact.

Bulky organic cations at perovskite surfaces and grain boundaries curb humidity, heat, and oxidation damage while preserving photovoltaic efficiency.

Supercritical ammonia growth controls oxygen and hydrogen in n-type GaN to lower dislocation density and improve carrier mobility at lower cost.

Controlled wire-saw cutting and etching limit indium phosphide back-surface warp for uniform susceptor contact and stable epitaxial growth.

Alternating active and barrier semiconductor layers tune blue-to-red photoluminescence with sharper spectra, high efficiency, and stability.

A rigid carrier enables SiC layer fracture along subsurface laser damage, cutting kerf loss, wafer bow, and processing time.

A high-temperature pre-anneal dissolves oxide precipitate nuclei before 800-1200°C processing, preserving minority carrier lifetime.

Molten metal is printed and reacted with gas species to form localized single-crystal semiconductor regions without masking, etching, or regrowth.

Silicon and gallium co-doped germanium wafers suppress anti-phase domains during III-V epitaxy, raising solar cell open-circuit voltage.

Angled SiC trenches and step-controlled epitaxy enable low-defect 3C-SiC growth with improved electrical characteristics at lower cost.

Backside warpage control keeps an indium phosphide substrate in uniform susceptor contact, improving heat distribution during epitaxial growth.

A single thin OLED embedded in a photonic crystal boosts band-edge emission, refines spectrum, and eases full-color display manufacturing.

Using turbostratic graphene instead of Bernal-stacked layers improves exfoliation and rubber dispersion, boosting conductivity at lower loading.

Moderate-pressure CVD below 800°C forms single-crystal silicon or SiGe layers with lower chamber complexity, faster throughput, and smoother surfaces.

Continuous silicon ribbon growth creates low-oxygen surface regions and tailored defects, improving carrier lifetime without annealing.

High-energy atom deposition forms thick rhombohedral epitaxial layers at 500°C or below, cutting thermal soak time and energy use.

A back-side non-monocrystalline support layer limits bow in thin wide band gap wafers, enabling splitting, handling, and wafer reuse.

Pulsed laser ablation forms phosphorus plasma for centimeter-scale black phosphorus films with uniform crystallinity for electronic and optoelectronic use.

Spatially separated source gases and high pressure suppress nitride decomposition, enabling high-indium alloy growth at elevated temperatures.

A trap-rich layer in a high-resistivity RF SOI wafer suppresses interface inversion and parasitic conduction, cutting loss and distortion.

Ultra-smooth substrates and sputtered GaN films enable high crystallinity on large-area glass or resin backplanes with low heat resistance.

Swept-frequency ultrasound in alkaline and acid cleaning removes GaAs particles while suppressing surface damage that degrades epitaxial film LPD.

A doped and surface-coated monocrystalline sodium-ion cathode limits electrolyte attack and phase change to reduce fragmentation and extend cycling.

Multi-photon photoluminescence maps dislocation density and tilt in GaN substrates to suppress cracking and fragmentation during epitaxy.

Controlled hot wall and e-beam deposition tailor alkali semi-metal photocathode films for higher quantum efficiency and better uniformity.