Results 101 to 110 of about 12,657 (265)

Effects of Ohmic Contact Formation between GaN Photocatalyst and Pt Cocatalyst

Electrochemistry
A model photocatalyst composed of n-type GaN thin film as a photocatalyst body with a comb shaped electrode composed of Pt layer or Pt/Ti bilayer on the surface was successfully prepared, and photocatalytic and electric properties are investigated ...
Takaya OCHIAI, Meita ASAMI, Lionel VEIGA, Shingi YAMAGUCHI, Masakazu SUGIYAMA, Tsutomu MINEGISHI   +5 more
doaj   +1 more source

Surface Photovoltage Study of Metal Halide Perovskites Deposited Directly on Crystalline Silicon. [PDF]

ACS Omega, 2023
Donchev V, Regaldo D, Georgiev S, Bojar A, da Lisca M, Kirilov K, Alvarez J, Schulz P, Kleider JP.   +8 more
europepmc   +1 more source

Propagation of edge magnetoplasmons in semiconductor quantum-well structures

, 2006
The wavelength and the propagation length of the edge magnetoplasmons, running along the edge of a two-dimensional electron layer in a semiconductor quantum-well structure are theoretically studied as a function of frequency, magnetic field, electron ...
Mikhailov, S. A.
core   +1 more source

Toward Next‐Generation High‐Speed Communication and Imaging: Solution‐Processed Sb2(S,Se)3/CdS Heterojunction for Ultrafast Self‐Powered Photodetector

Advanced Science, EarlyView.
A high‐quality solution‐processed Sb2(S,Se)3/CdS heterojunction is designed to overcome the intrinsic limitations of conventional photodetectors. The fabricated device achieves an excellent self‐powered performance, including a high responsivity of 0.6 A W−1, an ultrahigh specific detectivity of 7.68 × 1012 Jones, and a wide 3db bandwidth of 175 kHz ...
Xuhua Xiao, Yichao Wang, Jingxuan Bian, Hailong Wang, Yongqiang Wang, Jinpeng Xu, Junwei Chen   +6 more
wiley   +1 more source

Photoluminescence, modulation spectroscopy and surface photovoltage characterization of quaternary Zn1-x-yCdxMgySe compounds

Moldavian Journal of the Physical Sciences, 2011
An optical characterization of wurtzite Zn1-x-yCdxMgySe crystalline alloys grown by the modified high-pressure Bridgman method has been carried out by temperature-dependent photoluminescence (PL) and contactless electroreflectance
Dumcenco, Dumitru, Levcenco, Sergiu, Huang, Ying-Sheng, Firszt, F., Hsu, H, Tiong, Kwong-Kaw   +5 more
doaj  

Tuned Oxidation Potential of Continuous Defective Photocatalyst for Selective Biomass Conversion

Advanced Science, EarlyView.
This work develops a wavelength‐controlled photocatalytic strategy that utilizes defect‐state excitation to modulate oxidative capability for biomass selective conversion. By tuning the photooxidation potential to match substrate reactivity, the system suppresses overoxidation and enables the selective formation of value‐added products, providing a ...
Longfei Hong, Huiyan Zhang, Liangdong Hu, Xiang Gao, Lianhua Xu, Qingyu Liu, Rui Xiao, Sheng Chu   +7 more
wiley   +1 more source

Synthesis Control of Charge Separation at Anatase TiO₂ Thin Films Studied by Transient Surface Photovoltage Spectroscopy. [PDF]

ACS Appl Mater Interfaces, 2022
Dittrich T, Sydorenko J, Spalatu N, Nickel NH, Mere A, Krunks M, Oja Acik I.   +6 more
europepmc   +1 more source

Energy‐Resolved Femtosecond Dynamics of Plasmon‐Induced Hole Injection at Au/GaN Heterointerfaces

Advanced Science, EarlyView.
We reveal the spectral signature of ultrafast nonthermal hot‐hole transfer at plasmonic heterointerfaces, which reshapes hot‐carrier relaxation dynamics and significantly enhances hydrogen evolution, providing a mechanistic basis for optimizing hot‐carrier utilization in photocatalysis.
Yuying Gao, Yuxin Xie, Jonathan Diederich, Christian Höhn, Klaus Schwarzburg, Fengtao Fan, Can Li, Roel van de Krol, Dennis Friedrich   +8 more
wiley   +1 more source

Site‐Specific Carboxylate Functionalization in Conjugated Hole Transport Polymers Enables Efficient CsPbI2Br Single‐Junction and Tandem Solar Cells

Advanced Science, EarlyView.
Two polymeric isomers, 2TC‐F and TTC‐F, are designed and synthesized as hole transport materials to investigate the impact of the carboxylate side‐chain connection site. The TTC‐F isomer, owing to its superior energy level alignment, higher planarity, and more effective defect passivation, enabled CsPbI2Br single‐junction and CsPbI2Br/D18:Y6 tandem ...
Jingfei Wang, Weilin Zhang, Haobin Zhang, Zongwei Chen, Tangyue Xue, Qing Guo, Zhi Zheng, Zongtao Wang, Erjun Zhou, Qiang Guo   +9 more
wiley   +1 more source

Extending Carrier Diffusion via Interfacial Dielectric Shielding for Operationally Stable Perovskite/TOPCon Tandem Solar Cells

Advanced Science, EarlyView.
A high‐dielectric niobium oxide (NbOX) electron‐selective contact is introduced to modulate the perovskite/C60 interface in perovskite/silicon tandem solar cells. By shrinking the defect capture radius and chemically passivating Pb‐related defects, NbOX extends carrier diffusion length and optimizes energy‐level alignment, enabling both high efficiency
Wenfeng Liu, Zhiqin Ying, Huan Li, Xin Li, Haofan Ma, Yunyun Yu, Ziyu He, Rui Li, Meili Zhang, Yuheng Zeng, Luyao Zheng, Xi Yang, Jichun Ye   +12 more
wiley   +1 more source