Why is "Band gap" trending?
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- Date: 2026-03-15 18:10:20
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Wikipedia Overview
In solid-state physics and solid-state chemistry, a band gap, also called a bandgap or energy gap, is an energy range in a solid where no electronic states exist. In graphs of the electronic band structure of solids, the band gap refers to the energy difference between the top of the valence band and the bottom of the conduction band in insulators and semiconductors. It is the energy required to promote an electron from the valence band to the conduction band. The resulting conduction-band electron are free to move within the crystal lattice and serve as charge carriers to conduct electric current. It is closely related to the HOMO/LUMO gap in chemistry. If the valence band is completely full and the conduction band is completely empty, then electrons cannot move within the solid because there are no available states. If the electrons are not free to move within the crystal lattice, then there is no generated current due to no net charge carrier mobility. However, if some electrons transfer from the valence band to the conduction band, then current can flow. Therefore, the band gap is a major factor determining the electrical conductivity of a solid. Substances having large band gaps are generally insulators, those with small band gaps are semiconductors, and conductors either have very small band gaps or none, because the valence and conduction bands overlap to form a continuous band.
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Search Interest Perspective
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Thickness-modulated crystal structure and band gap of 2D SnSe deposited by molecular beam epitaxy - Nature
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Defect passivation and crystallization modulation in methylammonium-free wide-bandgap perovskites for all-perovskite tandem solar cells - Science | AAAS
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Direct to indirect band gap transition induced by approximately dark states | Communications Materials - Nature
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Insights into the operational stability of wide-bandgap perovskite and tandem solar cells under rapid thermal cycling - Nature
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Mode-locking in a semiconductor photonic bandgap laser - Communications Physics - Nature
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Crystallization modulation for wide-bandgap perovskites with universal defect passivation toward efficient perovskite/organic tandem photovoltaics - Nature
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Tuning of the band gap and suppression of metallic phase by ca doping in La - Nature
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Uniform phase distribution of wide bandgap perovskite for high-performance perovskite-silicon tandem solar cells - Nature
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Spectroscopic limits of diamond anvils to 520 GPa and projected bandgap closure - Nature
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Halide insertion regulation for efficient and stable wide-bandgap perovskite photovoltaics - Nature
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Powering the ultrawide-bandgap era - Nature
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The optoelectronic, mechanical, and thermoelectric properties of novel wide band gap double perovskites: a first-principles study - Nature
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Chemical treatment-induced indirect-to-direct bandgap transition in MoS - Nature
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Intermediate phase evolution for stable and oriented evaporated wide-bandgap perovskite solar cells - Nature
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Band gap and dispersion characteristics of phononic crystal microchannels under fluid solid coupling - Nature
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First-principles investigation of bandgap engineering and stability of LiBeZ (Z = P, As) half-Heusler alloys for optoelectronic and thermoelectric applications - Nature
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Aesthetic-inspired bandgap design in phononic crystal plates - Nature
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Tuning of crystal structure and electronic band gap of the monoclinic Ga - Nature
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High-throughput micro-scale bandgap mapping for perovskite-inspired materials with complex composition space - Nature
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Tunable band gap and ionic conductivity in PMMA and PANI blend with WO₃ nanocomposites for optoelectronics and energy storage devices - Nature
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DFT analysis of wide band gap TlBaCl3 and CsBaCl3 chloroperovskites for UV applications | Scientific Reports - Nature
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2D ferroelectric narrow-bandgap semiconductor Wurtzite’ type α -In - Nature
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Regulating wide-bandgap perovskite face-on stacking in hybrid-deposited perovskite/organic tandem solar cells - Nature
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Disentangling degradation pathways of narrow bandgap lead-tin perovskite material and photovoltaic devices - Nature
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Large bandgap observed on the surfaces of EuZn2As2 single crystals | Communications Physics - Nature
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Imprisoning 2H intermediate phases in blade-coated wide-bandgap perovskites for efficient all-perovskite tandem solar cells - Science | AAAS
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Orbital-level band gap engineering of RuO2 for enhanced acidic water oxidation | Nature Communications - Nature
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The bandgap-detuned excitation regime in photonic-crystal resonators - Nature
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nanostructures for enhanced visible-light activity and environmental applications - Nature
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Narrowing band gap chemically and physically: conductive dense hydrocarbon - Nature
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Editorial: Wide-bandgap oxide semiconductors: unveiling excitonic potential - Frontiers
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Harnessing the power of S/N-doped NiO nanoparticles through bandgap tuning to achieve enhanced photocatalytic and antibacterial performances - Nature
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Computational insights into wide bandgap lead free perovskite solar cells for silicon based tandem configurations - Nature
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Indirect to direct band gap transition and excellent optical properties in novel MoSi - Nature
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Tunability of acoustic band gaps using Thue Morse quasiperiodic lateral resonators - Nature
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Inductive effects in molecular contacts enable wide-bandgap perovskite cells for efficient perovskite/TOPCon tandems - Nature
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News - Mind the band gap! – researchers create new nanoscale forms of elementary semiconductor with tunable electronic properties - University of Nottingham
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Ultrawide bandgap gives material high-power potential - Cornell Chronicle
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Piezoelectricity in half-Heusler narrow-bandgap semiconductors - Science | AAAS
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Piracetam shapes wide-bandgap perovskite crystals for scalable perovskite tandems - Nature
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Quenching the bandgap of two-dimensional semiconductors with a perpendicular electric field - Nature
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Why Do Solids Have Band Gaps? - Forbes
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Facile band gap tuning in graphene–brucite heterojunctions - Scientific Reports - Nature
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Direct-bandgap emission from hexagonal Ge and SiGe alloys - Nature
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Electrically stimulated optical spectroscopy of interface defects in wide-bandgap field-effect transistors - Nature
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Optimization of bandgap reduction in 2-dimensional GO nanosheets and nanocomposites of GO/iron-oxide for electronic device applications - Nature
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Bandgap engineering of two-dimensional semiconductor materials - Nature
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Indirect-to-direct bandgap transition in GaP semiconductors through quantum shell formation on ZnS nanocrystals - Nature
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Disorder-order transition–induced unusual bandgap bowing effect of tin-lead mixed perovskites - Science | AAAS
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Layer-Dependent Band Gaps of Platinum Dichalcogenides - ACS Publications
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Accurate and efficient band-gap predictions for metal halide perovskites at finite temperature - Nature
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Direct bandgap emission from strain-doped germanium - Nature
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Excitons stabilize above the band gap in bilayer WSe - Nature
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Large bandgap of pressurized trilayer graphene - PNAS
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The defect challenge of wide-bandgap semiconductors for photovoltaics and beyond - Nature
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Group IV Direct Band Gap Photonics: Methods, Challenges, and Opportunities - Frontiers
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Origin and tuning of bandgap in chiral phononic crystals - Nature
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Toward direct band gaps in typical 2D transition-metal dichalcogenides junctions via real and energy spaces tuning - Nature
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Auto-generated database of semiconductor band gaps using ChemDataExtractor - Nature
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Bandgap control in two-dimensional semiconductors via coherent doping of plasmonic hot electrons - Nature
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Machine learning method improves semiconductor band gap predictions - Tech Xplore
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Optical band gap modulation in functionalized chitosan biopolymer hybrids using absorption and derivative spectrum fitting methods: A spectroscopic analysis - Nature
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Utilizing photonic band gap in triangular silicon carbide structures for efficient quantum nanophotonic hardware - Nature
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Band gap engineering of In(Ga)N/GaN short period superlattices - Scientific Reports - Nature
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Origin of band gaps in 3d perovskite oxides - Nature
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Bandgap formation mechanism in tacticity inspired elastic mechanical metastructures | Scientific Reports - Nature
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Strain modulating electronic band gaps and SQ efficiencies of semiconductor 2D PdQ - Nature
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Origin of observed narrow bandgap of mica nanosheets - Nature
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Remote epitaxy and freestanding wide bandgap semiconductor membrane technology - Nature
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Direct band-gap crossover in epitaxial monolayer boron nitride - Nature
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Graphene Is Grown With the Same Bandgap as Silicon - IEEE Spectrum
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Tunability of the bandgap of SnS by variation of the cell volume by alloying with A.E. elements - Nature
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Direct bandgap quantum wells in hexagonal Silicon Germanium - Nature
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Writing above the bandgap - Nature
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Methylammonium-free wide-bandgap metal halide perovskites for tandem photovoltaics - Nature
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Ultranarrow-bandgap small-molecule acceptor enables sensitive SWIR detection and dynamic upconversion imaging - Science | AAAS
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Wide-bandgap semiconductors and power electronics as pathways to carbon neutrality - Nature
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Bandgap atomistic calculations on hydrogen-passivated GeSi nanocrystals - Nature
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Ultra-wide bandgap semiconductor Ga - Nature
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Optimal design of lattice structures for controllable extremal band gaps - Nature
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Graphene-based semiconductor has a useful bandgap and high electron mobility - Physics World
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Dissipation-enabled hydrodynamic conductivity in a tunable bandgap semiconductor - Science | AAAS
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Ultra-wide-band-gap materials: spectrally detecting E-fields - U.OSU
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Anomalous isotope effect on the optical bandgap in a monolayer transition metal dichalcogenide semiconductor - Science | AAAS
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Light momentum turns pure silicon from an indirect to a direct bandgap semiconductor - Phys.org
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Moderate strain induced indirect bandgap and conduction electrons in MoS - Nature
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Band gap engineering in blended organic semiconductor films based on dielectric interactions - Nature
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Crystallization Thermodynamics Regulation of 1.85 eV Wide-Bandgap Perovskite for Efficient and Stable Perovskite-Organic Tandem Photovoltaics - Wiley Online Library
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A band-gap database for semiconducting inorganic materials calculated with hybrid functional - Nature
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Tunable strain and bandgap in subcritical-sized MoS2 nanobubbles | npj 2D Materials and Applications - Nature
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Waveguide bandgap engineering with an array of superconducting qubits | npj Quantum Materials - Nature
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Band gap bowing in NixMg1−xO - Scientific Reports - Nature
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Efficient electrical control of thin-film black phosphorus bandgap - Nature
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Machine learning-enhanced band gaps prediction for low-symmetry double and layered perovskites - Nature
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Tunable bandgap renormalization by nonlocal ultra-strong coupling in nanophotonics - Nature
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Bandgap Engineering on UiO–66 Metal-Organic Framework Derivatives for Solar-Driven Seawater Desalination - Wiley
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Bandgap engineering of two-dimensional C - Nature
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A design strategy to match the band gap of periodic and aperiodic metamaterials - Nature
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Wide Bandgap Semiconductors Market Size & Trends 2032 - Allied Market Research
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Chiral trabeated metabeam for low-frequency multimode wave mitigation via dual-bandgap mechanism - Nature
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