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1 m exciton dark states which extend below the bandgap.
2 ance of a semiconductor is determined by its bandgap.
3 eously achieve high piezoelectricity and low bandgap.
4 as been a mainstream strategy for tuning the bandgap.
5 tier molecular orbital without impacting the bandgap.
6 alized polymers, which typically show medium bandgap.
7 ties, including a wide and complete photonic bandgap.
8 me is consistent with their relative optical bandgap.
9 ator strength by tuning the bilayer graphene bandgap.
10 nd shows a possibility of wide tunability of bandgap.
11 lammonium lead tri-iodide with a sub-optimal bandgap.
12 to be removed by phonon modes outside of the bandgap.
13 ng from excitation across the nanosurfactant bandgap.
14 ming, stable perovskite top cell with a wide bandgap.
15 ities occupying shallow energy levels in the bandgap.
16 materials consisting of heavy atoms and low bandgaps.
17 sSnI3 )x (0<x<1) compositions with anomalous bandgaps.
18 conversion efficiencies (PCE) at a range of bandgaps.
19 a large amount of iodine to realize smaller bandgaps.
20 nd create nontrivial topologically protected bandgaps.
24 Here we show the promise of an inorganic low-bandgap (1.38 eV) CsPb(0.6)Sn(0.4)I(3) perovskite stabil
25 iophene) (N2200), DCNBT-IDT shows a narrower bandgap (1.43 eV) with a much higher absorption coeffici
27 material exhibited semiconducting behavior (bandgap ~1.94 electron volts), high strength (~66 gigapa
29 ), and has been shown to influence the local bandgap(12,13) and quantum emission properties(14) of TM
30 al-neutron-capture cross-section, a suitable bandgap (2.06 electronvolts) and a favourable electronic
35 structural heterojunctions form between high-bandgap 2D surface crystallites and lower-bandgap 3D dom
36 bust materials prized for their size-tunable bandgap(3); however, they also require further advances
37 rovskite heterostructures formed between low-bandgap 3D and higher-bandgap 2D components are demonstr
39 power electronics, thanks to its ultra-wide bandgap (4.5-4.8 eV) and ability to be easily doped n-ty
40 ultrahigh kappa in conjunction with its wide bandgap (6.2 electron volts) makes cBN a promising mater
43 ar subcell is generally composed of a narrow-bandgap acceptor for infrared absorption but a large-ban
49 s that appears at 2.28 eV above the pristine bandgap and displays pronounced ferromagnetic hysteresis
50 the off-state the Fermi level moves into the bandgap and electrons suffer from severe back-scattering
51 are shown to induce large variations of the bandgap and exciton binding energies up to the 100 meV r
52 ical properties such as conveniently tunable bandgap and extremely high ambipolar carrier mobility fo
53 an be ascribed to self-trapped states within bandgap and extremely low electrical conductivity in the
55 small (<450 meV) energy loss compared to the bandgap and high (>100 cm(2) V(-1) s(-1) ) intrinsic car
56 sion results in decrease of their electronic bandgap and improvement in the electrical conductivity o
57 y changes the crystal structure, reduces the bandgap and increases the hole mobility of alpha-FAPbI(3
58 ures(9,10), because diamond has a much wider bandgap and is less sensitive to imperfections(11,12).
59 cture, including some electronic properties (bandgap and number of electrons), symmetry indicators, a
61 sion of 2D all-inorganic CsPb(2) Br(5) , its bandgap and photoluminescence (PL) origin have generated
63 e mobility-lifetime (mutau) product, tunable bandgap and simple single crystal growth from low-cost s
64 mproved synthetic control ultimately enables bandgap and strain engineering in colloidal nanomaterial
66 -imaging reveals the formation of a photonic bandgap and strong modulation of the local plasmonic den
67 ciencies, and indeed perovskite-based single bandgap and tandem solar cell designs have yielded impre
68 e on-state, the Fermi level lies in the bulk bandgap and the electrons travel ballistically through t
72 ch constitute about ~ 70%; while the optical bandgaps and electrical resistivity decrease with increa
73 gated aromatic backbones, leading to limited bandgaps and hence high conduction loss and poor energy
74 one molecular axis, engendering low optical bandgaps and improved oscillator strength for their lowe
76 ages over the h-phase alloys such as smaller bandgaps and smaller effective masses, which motivate th
77 over the reflection (through the 3D photonic bandgap) and the transmission (through 2D diffractive st
79 ving good coupling efficiency, an ultra-wide bandgap, and the capability for both n- and p-type dopin
80 n of the MoTe(2) and SnS(2) of complementary bandgaps, and the graphene interlayer provides a unique
81 e perovskites featured with a tunable energy bandgap are ideal candidates for light absorbers in tand
84 h-Z bcc metals with large spin-orbit-induced bandgaps are discussed as candidates for topologically n
87 al depletion region band design and a narrow bandgap AsP as an effective carrier selective contact.
88 4) highlight the presence of an intermediate bandgap, associated with enhanced photovoltaic (PV) perf
89 effectively customizes the relatively small bandgap at the Fermi level, leading to an exotic phase t
90 ces which create highly attenuating phononic bandgaps at frequencies with negligible coupling of SAWs
91 to manipulate wave propagation and producing bandgaps at specific frequency ranges. Enhanced customiz
92 metamaterials with human gesture-controlled bandgap behaviors and soft robotic fingers which can mea
93 h a high lateral conductivity and an optimal bandgap below 1 eV, these superior CM characteristics id
95 creasing n from 0 -> 6 contracts the optical bandgap, but only marginally lowers the LUMO for n > 4.
98 n (10 +/- 1 nm) epitaxial VO(2) films due to bandgap changes throughout the whole temperature regime
99 The proposed EBG structures exhibited wide bandgap characteristics and improved scattering paramete
100 t in GeSn alloys in order to increase direct bandgap charge carrier recombination and, therefore, to
101 lations for the new material reveal a direct bandgap, consistent with the experimental value, and rel
102 rast of about 2, which means that a photonic bandgap could be achieved using known materials at optic
107 ws additional degrees of freedom in photonic bandgap design through directed protein conformation mod
109 ductor Fermi levels become pinned inside the bandgap, deviating from the ideal Schottky-Mott rule and
111 lane asymmetry, leading to direct electronic bandgaps, distinctive optical properties and great poten
112 fer from the high-bandgap domains to the low-bandgap domains (<0.5 ps) compared to the randomly orien
113 have a faster energy transfer from the high-bandgap domains to the low-bandgap domains (<0.5 ps) com
114 t, whereby ion migration would yield smaller-bandgap domains with red-shifted photoluminescence.
115 ling from lower-dimensional nanosheets (high-bandgap domains) to 3D nanocrystals (low-bandgap domains
117 However, there are only a few successful low-bandgap donor materials developed with near-infrared (NI
118 a useful building block for constructing low-bandgap donor materials due to its large conjugated plan
120 acceptor for infrared absorption but a large-bandgap donor to realize a high open-circuit voltage.
122 on formation, (3) the indirect nature of the bandgap (e.g., Rashba effect), and (4) photon recycling.
123 tes, and the possible indirect nature of the bandgap (e.g., Rashba effect), seem to be less likely gi
124 types of meta-materials and electromagnetic bandgap (EBG) structures to improve the performance of a
125 l(2) O(3) to enhance its absorption near the bandgap edge, the Se(0.32) Te(0.68) film (an optical ban
126 e believe, is a result of synthesizing a low bandgap electrospun metal-oxide nanomaterial correspondi
131 ) with tunable ultraviolet-to-visible direct bandgaps exhibit large nonlinear optical responses due t
133 imilar to several synthetic devices, such as bandgap filters, laser mirrors, and (in particular) fibe
136 (x) Te(1-) (x) alloy thin films with tunable bandgaps for the fabrication of high-performance SWIR ph
140 possess a high density (>7 g/cm(3)) and wide bandgaps (>1.9 eV), showing great stopping power for har
141 a semiconducting material with controllable bandgap has the potential to benefit the electronic and
142 sitional and structural versatility, tunable bandgap, high photoluminescence quantum yield and facile
143 ping on the perovskite B-site can obtain low bandgap (i.e., 1.1-3.8 eV), the electrically leaky perov
145 -reversal-invariant surface state in a local bandgap in the (110)-projected bulk band structure.
147 with excellent formability, inducing tunable bandgaps in graphene of up to 2.1 eV, as determined by s
149 incident light into the waveguide generating bandgaps in the transmittance spectrum, whose position i
151 r an efficient lasing medium based on direct-bandgap interlayer excitons in rotationally aligned atom
152 properties; nonetheless, its lack of energy bandgap is a substantial limitation for practical applic
155 e photoluminescence emission and increase in bandgap is observed while retaining high photoluminescen
156 yer tungsten diselenide, we observe that the bandgap is renormalized downwards by several hundreds of
157 f-the-art halide perovskite solar cells have bandgaps larger than 1.45 eV, which restricts their pote
164 le electronic material and what an ultrawide bandgap material such as diamond, with many appealing fu
165 at would transform diamond from an ultrawide-bandgap material to a smaller-bandgap semiconductor.
167 oltaics, the front subcell is based on large-bandgap materials, whereas the case of the rear subcell
168 ain to monolayer MoS(2), we observe a higher bandgap modulation up to ~300 meV and a highest modulati
171 photodetectors based on a novel ultranarrow-bandgap nonfullerene acceptor, CO1-4Cl, are presented, s
173 Pb/Sn-based perovskites, exhibiting a narrow bandgap of 1.27 eV and a long carrier lifetime of 657.7
174 olecular framework, NITI shows a low optical bandgap of 1.49 eV in thin film and a high molar extinct
175 voltage ( V(OC)) of a device with an optical bandgap of 1.57 eV for the perovskite layer reaches 1.23
177 N stoichiometry (C(3)N(5)) and an electronic bandgap of 1.76 eV, by thermal deammoniation of the mele
178 ]} (PDTIDTBT), which shows a relatively wide bandgap of 1.82 eV, good mobility, and high transmittanc
179 xample of a 2D Ag-Bi iodide DP with a direct bandgap of 2.00(2) eV, templated by a layer of bifunctio
181 ed typical thicknesses of 1.3 nm, an optical bandgap of 3.5 eV and a carrier mobility of 21.5 cm(2) V
184 on under hydrostatic pressure shows that the bandgap of CsPb(2) Br(5) is 0.3-0.4 eV higher than previ
185 The yttrium on grain surface increases the bandgap of grain shell, which confines the charge carrie
186 ces and excitations both above and below the bandgap of materials, and to probe their response at the
187 deep levels and their chemical trends in the bandgap of MoS(2), WS(2) and their alloys by transient s
189 en electroluminescent devices approaches the bandgap of the emitting material as the gate oxide thick
194 edge, the Se(0.32) Te(0.68) film (an optical bandgap of ~0.8 eV)-based photoconductor exhibits a cut-
195 onolayer MoTe(2) , with the narrowest direct bandgap of ~1.1 eV among Mo- and W-based transition meta
196 eloped a stable perovskite solar cell with a bandgap of ~1.7 electron volts that retained more than 8
197 ating single bonds, endowing it with a large bandgap of ~5 eV and flexibility, while being temperatur
198 has surged in the past few years, while the bandgaps of current perovskite materials for record effi
199 bsorption measurements, it is shown that the bandgaps of Se(x) Te(1-) (x) films can be tuned continuo
206 insulators that have either noticeable full bandgaps or a considerable direct gap together with smal
208 ing the visible absorbing component in a low-bandgap organic bulk-heterojunction layer, an ST-PV with
210 ed and experimentally confirmed to be narrow-bandgap p-type semiconductors with high Seebeck thermopo
212 increases the optimized thickness of narrow-bandgap perovskite films to 1000 nm, yielding exceptiona
213 t to a promising direction for achieving low-bandgap perovskite solar cells with high stability.
214 E of 26.7% of a monolithic two-terminal wide-bandgap perovskite/silicon tandem solar cell was made po
215 ance the optoelectronic properties of narrow-bandgap perovskites and unleash the potential of perovsk
216 However, commonly used tin-based narrow-bandgap perovskites have shorter carrier diffusion lengt
219 e tunability (from 7 to ~30 nm), an indirect bandgap, photoconductivity (responsivity = 4 +/- 1 mA/W)
221 etter balance between absorption loss of sub-bandgap photons and thermalization loss of above-bandgap
222 gap photons and thermalization loss of above-bandgap photons as demonstrated by the Shockley-Queisser
227 of 20.2 and 22.7% for single junction narrow-bandgap PSCs and monolithic perovskite-perovskite tandem
228 f 1.15 V and a fill factor of 83% in 1.53 eV bandgap PSCs, leading to an efficiency of 21.6% in plana
232 isible range caused by hydrogenation-induced bandgap renormalization, producing strong higher-order r
233 s to iodides, with their prospectively lower bandgaps, represents an important target for semiconduct
236 trivial bandgap and the original directional bandgap result in various interesting wave propagation b
240 combining a ferroelectric BaTiO(3) , a wide-bandgap semiconductor of ZnO, and a plasmonic metal of A
244 d sophisticated device configuration, direct-bandgap-semiconductor nanostructures with attractive ele
246 ssable spins associated with defects in wide-bandgap semiconductors are versatile platforms for quant
247 transition-metal dichalcogenides, are direct-bandgap semiconductors at the monolayer level, and they
248 oichiometric Ga2FeO4 NCs are intrinsic small bandgap semiconductors, off-stoichiometric GFO NCs, prod
251 a: see text]) is sufficient to calculate the bandgap sequence and efficiency limits of arbitrarily co
254 bsorption peaks, related to the intermediate bandgaps similar to Cu(3)VS(4) and Cu(3)VSe(4) nanocryst
255 ve the performance of single-junction narrow-bandgap solar cells and, potentially, to give a highly e
256 eld and composition polydispersity at target bandgaps, spanning 1.9 to 2.9 eV, are simultaneously tun
259 is realized using a two-dimensional phononic bandgap structure to host the optomechanical cavity, sim
260 ructural deformation leads to a blue-shifted bandgap, sub-bandgap trap states with wider energetic di
261 atomically thin semiconductors with a direct bandgap such as group VI-B transition-metal dichalcogeni
262 synthesis of semiconductors with appropriate bandgaps, suitable energy levels of the frontier orbital
265 tanding, highly directional properties and a bandgap that depends on the number of layers of the mate
266 shallow electronic states in the perovskite bandgap that do not affect performance(5), perovskite de
267 vices still have many states deep within the bandgap that trap charge carriers and cause them to reco
268 , large dielectric constants, and electronic bandgaps that are relatively insensitive to disorder.
271 es by comparing the steady-state absorption, bandgap, transient absorption, as well as carrier dynami
272 apable of discovering the indirect-to-direct bandgap transition and semiconductor-to-metal transition
273 rocess is affected by the indirect-to-direct bandgap transition, and a comparison of results in monol
274 emetallization as well as indirect-to-direct bandgap transitions can be achieved reversibly in diamon
275 rmation leads to a blue-shifted bandgap, sub-bandgap trap states with wider energetic distribution, a
282 n onsets in the near infra-red with a direct bandgap value of 1.46 eV, suitable for single junction s
284 2D hexagonal boron nitride (hBN) is a wide-bandgap van der Waals crystal with a unique combination
289 ht focusing at the low frequency side of the bandgap, we detect efficiency and spectral nonlinear dep
290 evices, with their inherent indirect optical bandgap, weak light-modulation mechanism, and sophistica
291 ganic caesium lead halide perovskites have a bandgap well suited to tandem solar cells(1) but suffer
292 allows the formation of a graded electronic bandgap, which increases the carrier mobility and impede
293 of the topological modes lie within the bulk bandgap, which is not required for many topological crys
294 cs related to the existence of direct energy bandgap, which significantly lowers the leakage current
295 olating the acoustic mode of interest in the bandgap while allowing heat to be removed by phonon mode
296 - and I p-orbitals and increases the optical bandgap, while Pb-I-Pb tilting angles play a secondary r
299 which show a characteristic decrease of the bandgap with respect to their RP perovskite counterparts
301 ctroscopy as a tool to optimize the material bandgap without altering ultrafast photophysics is repor