Results 41 to 50 of about 12,657 (265)

Laser-induced persistent photovoltage on the surface of a ternary topological insulator at room temperature

, 2017
Using time- and angle-resolved photoemission, we investigate the ultrafast response of excited electrons in the ternary topological insulator (Bi$_{1 x}$Sb$_{x}$)$_2$Te$_3$ to fs-infrared pulses. We demonstrate that at the critical concentration $x$=0.55,
Battiato, M., Golias, E., Kornilov, O., Rader, O., Sánchez-Barriga, J., Varykhalov, A., Yashina, L. V.   +6 more
core   +1 more source

Photoelectrochemical Hydrogen Evolution Using Si Microwire Arrays [PDF]

, 2011
Arrays of B-doped p-Si microwires, diffusion-doped with P to form a radial n+ emitter and subsequently coated with a 1.5-nm-thick discontinuous film of evaporated Pt, were used as photocathodes for H_2 evolution from water.
Atwater, Harry A., Boettcher, Shannon W., Brunschwig, Bruce S., Kelzenberg, Michael D., Lewis, Nathan S., McKone, James R., Putnam, Morgan C., Santori, Elizabeth A., Turner-Evans, Daniel, Walter, Michael G., Warren, Emily L.   +10 more
core   +2 more sources

Surface photovoltage characterisation of metal halide perovskite on crystalline silicon using Kelvin probe force microscopy and metal-insulator-semiconductor configuration

EPJ Photovoltaics, 2022
In this study we analysed halide perovskite films deposited directly on crystalline silicon by means of two set-ups using different operating modes of the surface photovoltage (SPV) methods, i.e., the Kelvin probe force microscopy (KPFM) and the metal ...
Bojar Aleksandra, Regaldo Davide, Alvarez José, Alamarguy David, Donchev Vesselin, Georgiev Stefan, Schulz Philip, Kleider Jean-Paul   +7 more
doaj   +1 more source

Microwave photovoltage and photoresistance effects in ferromagnetic microstrips

, 2008
We investigate the dc electric response induced by ferromagnetic resonance in ferromagnetic Permalloy (Ni80Fe20) microstrips. The resulting magnetization precession alters the angle of the magnetization with respect to both dc and rf current ...
B. A. Gurney, B. S. Guru, C.-M. Hu, D. Polder, J.-G. Zhu, L. Landau, M. S. Sodha, N. Mecking, Y. S. Gui   +8 more
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Nanodiamond surface chemistry controls assembly of polypyrrole and generation of photovoltage

Scientific Reports, 2021
Nanoscale composite of detonation nanodiamond (DND) and polypyrrole (PPy) as a representative of organic light-harvesting polymers is explored for energy generation, using nanodiamond as an inorganic electron acceptor.
Daria Miliaieva, Petra Matunova, Jan Cermak, Stepan Stehlik, Adrian Cernescu, Zdenek Remes, Pavla Stenclova, Martin Muller, Bohuslav Rezek   +8 more
doaj   +1 more source

Tracking surface photovoltage dipole geometry in bi2se3 with time-resolved photoemission [PDF]

, 2019
Topological insulators have been shown to exhibit strong and long-lived surface photovoltages when excited by an infrared pump. The ability to generate long-lived potentials on these surfaces provides opportunities to manipulate the spin-momentum locked ...
Ciocys, S, Lanzara, A, Moore, JE, Morimoto, T   +3 more
core  

Efficient NiOx Hole Transport Layers Enabled by Multifunctional MXenes for High‐Performance Tin‐Lead Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
An efficient NiOx HTL is successfully prepared by introducing MXene as an additive without further surface modification to fabricate high‐performance FASn0.5Pb0.5I3 perovskite solar cells. The introduction of MXene contributes to improved conductivity of NiOx, better aligned at NiOx/perovskite interfaces, and enhanced quality of perovskite films ...
Lijun Chen, Guanqi Tang, Yanghou Wang, Xiaolong Cao, Junjun Jin, Jie Tang, Liyang Yu, Zheng Zhou, Peng You, Hanlin Hu, Weiqing Yang, Qidong Tai, Feng Yan   +12 more
wiley   +1 more source

Determination of the Electrical Parameters of Iodine-Doped Polymer Solar Cells at the Macro- and Nanoscale for Indoor Applications

Energies, 2023
In this work, macro- and nanodiagnostic procedures for working, third-generation photovoltaic devices based on a modified polymer:fullerene (P3HT:PCBM) absorber were conducted using atomic force microscopy (AFM) and impedance spectroscopy (IS) equipment.
Marcin Palewicz, Andrzej Sikora, Tomasz Piasecki, Ewelina Gacka, Paweł Nitschke, Paweł Gnida, Bożena Jarząbek, Teodor Gotszalk   +7 more
doaj   +1 more source

Benchmark performance of low-cost Sb2Se3 photocathodes for unassisted solar overall water splitting [PDF]

, 2020
Determining cost-effective semiconductors exhibiting desirable properties for commercial photoelectrochemical water splitting remains a challenge. Herein, we report a Sb2Se3 semiconductor that satisfies most requirements for an ideal high-performance ...
A Fujishima, A Paracchino, A Song, AG Tamirat, BA Pinaud, C Chen, C Chen, F Li, G Ghosh, GY Kim, H Kaneko, H Kobayashi, H Lee, J Kim, J Luo, J Park, J Tan, J Zhang, JA Turner, JD Major, JH Kim, JH Kim, JH Kim, K Sivula, L Pan, L Wang, L Zhang, LJ Phillips, M Vishwakarma, MS Prévot, MT Mayer, OS Hutter, Q Guo, R Wick-Jaliat., RR Prabhakar, S Hu, SD Tilley, T Higashi, T Yao, W Vijselaar, W Yang, W Yang, W Yang, W Yang, W-H Cheng, X Huang, Y Hao, Y Oh, Y-X Yu   +48 more
core   +4 more sources