Results 91 to 100 of about 4,367 (288)

Hydrogen Migration Enhances Proton‐Coupled Electron Transfer in an S‐Scheme Heterojunction for High‐Efficiency Photocatalysis

Carbon Energy, EarlyView.
Precisely directed built‐in electric field in an S‐scheme heterojunction synergizes photogenerated charge separation with interfacial proton migration, thus co‐localizing electrons and protons on the NOH surface and boosting proton‐coupled electron transfer kinetics in the rate‐determining hydrogen release step. ABSTRACT The kinetic bottleneck in solar‐
Qinhao Zhao, Yuxin Wang, Xuyu Yang, Shuhan Sun, Kai Li, Yanxian Jin, Huayue Zhu, Song Wang, Xiao Zhang, Xianqiang Xiong   +9 more
wiley   +1 more source

Electrochemical Design of Atomically Conformal Ga2O3 Buffer Layers via Cu2O‐Catalyzed Nitrate Reduction Reaction for Efficient Cu2O Photocathodes

Carbon Energy, EarlyView.
Cu2O catalyzes nitrate reduction to locally generate OH− at the electrode surface, enabling the first uniform electrochemical deposition of Ga2O3. The Cu2O/Ga2O3‐based photocathodes achieve onset potentials above 1 VRHE, 3.8% solar‐to‐hydrogen efficiency, and stable operation for over 60 h in all‐inorganic tandem PEC devices.
Ji Hoon Choi, Hak Hyeon Lee, Ji Hye Jeong, Dong Su Kim, Kun Woong Lee, Won Seok Yang, Hyung Koun Cho   +6 more
wiley   +1 more source

Co‐Doping Approach for Enhanced Electron Extraction to TiO2 for Stable Inorganic Perovskite Solar Cells

Small Science
Inorganic perovskite CsPbI3 solar cells hold great potential for improving the operational stability of perovskite photovoltaics. However, electron extraction is limited by the low conductivity of TiO2, representing a bottleneck for achieving stable ...
Thomas W. Gries, Davide Regaldo, Hans Köbler, Noor Titan Putri Hartono, Steven P. Harvey, Maxim Simmonds, Chiara Frasca, Marlene Härtel, Gennaro V. Sannino, Roberto Félix, Elif Hüsam, Ahmed Saleh, Regan G. Wilks, Fengshuo Zu, Emilio Gutierrez‐Partida, Zafar Iqbal, Zahra Loghman Nia, Fengjiu Yang, Paola Delli Veneri, Kai Zhu, Martin Stolterfoht, Marcus Bär, Stefan A. Weber, Philip Schulz, Jean‐Baptiste Puel, Jean‐Paul Kleider, Eva Unger, Qiong Wang, Artem Musiienko, Antonio Abate   +29 more
doaj   +1 more source

Dynamic‐FLPs Enabled by Orbital Hybridization Tuning: Boosting 100% CO Selectivity for Dilute CO2‐to‐CO Conversion

Carbon Energy, EarlyView.
This study, for the first time, constructs photostructured dynamic frustrated Lewis pairs (DFLPs) via a p‐p orbital hybridization regulation strategy, achieving the 100% reduction of low‐concentration CO₂ to CO and breaking the stability‐activity trade‐off.
Xiao‐hong Wang, Wen‐qing Gao, Jin‐li Liu, Yi‐lei Li, Hui‐ying Mu, Ying Liu, Fa‐tang Li   +6 more
wiley   +1 more source

Coupled Photocatalytic Hydrogen Production With Selective Biomass Valorization via Active Sites Construction and Electron Transport Channels Engineering

Carbon Energy, EarlyView.
A ternary CdS/1T‐WS2/CNTs heterojunction is in‐situ constructed via hydrothermal method, which is used for photocatalytic biomass reforming (biomass‐derived alcohols, lignin). It exhibits outstanding performance: H2 production rate of 26.17 mmol/g/h for benzyl alcohol (BA), benzaldehyde (BD) generation rate of 8.29 mmol/g/h, 90.06% BD selectivity, 100%
Ermiao Liang, Yi Li, Xue Liu, Ke Cheng, Baoqi Li, Mingcong Xu, Sha Luo, Chunhui Ma, Zhijun Chen, Zupeng Chen, Shouxin Liu, Wei Li   +11 more
wiley   +1 more source

Crystalline Silicon Photocathode with Tapered Microwire Arrays Achieving a High Current Density of 41.7 mA cm⁻2

Advanced Materials Interfaces
To design a high‐efficiency crystalline silicon (c‐Si) photocathode, the photovoltage and photocurrent generated by the device must be maximized because these factors directly affect the hydrogen evolution reaction (HER).
Wonjoo Jin, Youri Lee, Changhwan Shin, Jeonghwan Park, Ji‐Wook Jang, Kwanyong Seo   +5 more
doaj   +1 more source

Differential surface photovoltage spectroscopy of δ-doped GaAs/AlAs quantum wells [PDF]

, 2007
Bronislovas Čechavičius
openalex   +1 more source

Flower‐Like Hollow Structure Cocatalyst of Amorphous CoZnPx With Strong Capacitance for Simultaneous Photocatalytic Hydrogen and Acetic Acid Evolution

EcoEnergy, EarlyView.
An amorphous nanoflower‐like hollow‐structured cocatalyst CoZnPx‐H is developed and shows strong capacitance catalysis to significantly enhance the photocatalytic H2 and acetic acid evolution simultaneously. ABSTRACT Cocatalyst structure is crucial for optimizing the utilization of photogenerated charge carriers to enhance photocatalytic efficiency ...
Lingxiao Song, Xuan Zhang, Jianguo He, Jiajia Wang, Jiahui Yang, Keying Lin, Wei Wang, Dong Feng, Baojun Ma   +8 more
wiley   +1 more source

Spatiotemporal Visualization of Photogenerated Carriers on an Avalanche Photodiode Surface Using Ultrafast Scanning Electron Microscopy

Nanomaterials
The spatiotemporal evolution of photogenerated charge carriers on surfaces and at interfaces of photoactive materials is an important issue for understanding fundamental physical processes in optoelectronic devices and advanced materials.
Yuan Tian, Dong Yang, Yu Ma, Zhongwen Li, Jun Li, Zhen Deng, Huanfang Tian, Huaixin Yang, Shuaishuai Sun, Jianqi Li   +9 more
doaj   +1 more source

Studies of NO₂ Gas-Sensing Characteristics of a Novel Room-Temperature Surface-Photovoltage Gas Sensor Device. [PDF]

Sensors (Basel), 2020
Kwoka M, Szuber J.
europepmc   +1 more source