Results 121 to 130 of about 4,035,475 (305)

Sub‐1 ms Optoelectronic Synapse Based on {ZnCdO/ZnO} Multilayer Structure for High‐Speed Neuromorphic Vision Systems

Advanced Functional Materials, EarlyView.
Eu‐doped {ZnCdO/ZnO} structures grown on Si are developed, showcasing dual‐functionality controlled by europium doping. While high europium concentration transforms the device into an ultrafast, self‐powered photodetector, low‐doped structures can be used as an optoelectronic synapse.
Igor Perlikowski, Eunika Zielony, Adrian Kaim, Ewa Przeździecka   +3 more
wiley   +1 more source

Elevated Efficiency and Stability of Hole-Transport-Layer-Free Perovskite Solar Cells Triggered by Surface Engineering

Surface engineering is one of the important strategies to enhance the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs).
Qingbo Wei (321344), Jiating Wang (12099212), Feng Fu (218124), Yixuan Gao (8947439), Nannan Wang (165699), Lingxing Zan (14242024), Yucheng Liu (1435525), Yingjia Zhuansun (18358111), Decai Zhu (14311151)   +8 more
core   +1 more source

Dislocation-assisted electron and hole transport in GaN epitaxial layers

Nature Communications
Dislocations significantly influence carrier transport in semiconductors. While segments orthogonal to the channel act as scattering centers impeding conduction, electrically active dislocation cores can facilitate carrier transport. However, the mechanisms governing carrier transport along dislocation cores remain unclear.
Yixu Yao, Sen Huang, Ruyue Cao, Zhaofu Zhang, Xinhua Wang, Qimeng Jiang, Jingyuan Shi, Chenrui Zhang, Jiaolong Liu, Ke Wei, Yi Pei, Hui Zhang, Hongtu Qian, Fuqiang Guo, Guoping Li, Ning Tang, Jun-Wei Luo, Weikun Ge, Xinyu Liu, Bo Shen, Kevin J. Chen   +20 more
openaire   +2 more sources

Hopping‐Mediated Zero‐Bias Photocharge Retention in Solution‐Processed Van Der Waals Heterostructures

Advanced Functional Materials, EarlyView.
Liquid–liquid interface assembly enables the fabrication of solution‐processed MoS2 and WSe2 centimeter‐scale, nanometer‐thick type‐II heterostructures on paper. Interfacial charge separation and hopping‐limited recombination produce rectification and persistent photocharge retention at zero bias.
Aniello Pelella, Andrea Sessa, Yi‐Chen Tsai, Xuzhao Liu, Abdul Mannan, George Greaves, Yahya Saboon, Ben Spencer, Antonio Di Bartolomeo, Cinzia Casiraghi, Jessica Boland, Alessandro Grillo   +11 more
wiley   +1 more source

Circularly Polarized Electroluminescence and Spin‐Polarized Carrier Transport in Chiral‐Doped Polymer Films

Advanced Functional Materials, EarlyView.
Chiral dopants induce supramolecular chirality in an achiral polymer (PFO), generating spin‐polarized carriers via the chiral‐induced spin selectivity (CISS) and suggesting a possible contribution of Spin‐polarized carrier transport to circularly polarized electroluminescence (CPEL).
Kazuyuki Asahi, Masashi Hasegawa, Yuuya Nagata, Tamaki Nakano, Hiroyuki Nishikawa   +4 more
wiley   +1 more source

Photoinduced Charge Separation in Single‐Component Squaraine Films: The Key Role of Electrostatic Disorder

Advanced Functional Materials, EarlyView.
ABSTRACT Neat films of organic dyes are an interesting technological platform for solar cells and photodetectors. Recently, the conventional biphasic bulk‐heterojunction paradigm for photoinduced charge separation was challenged by the observation that charge carriers can be photogenerated in single‐component materials. A comprehensive experimental and
Davide Giavazzi, João Pedro Ferreira Assunção, Michael Bauer, Matthias Diethelm, Wei‐Hsu Hu, Mohammad Jafarpour, Roland Widmer, Antonia Neels, Dimitrios Sapalidis, Bruno F. B. Silva, Roland Hany, Frank Nüesch, Anna Painelli   +12 more
wiley   +1 more source

Hole transport layer material and solar cell using hole transport layer material having high photoelectric conversion efficiency

GMFAlternative title(s) : (en) Hole transport layer material and solar cell using hole transport layer ...
Nazeeruddin, Mohammad Khaja, Gao, Peng, Ganesan, Paramaguru, Graetzel, Michael   +3 more
core  

Pre- and post-treatments free nanocomposite based hole transport layer for high performance organic solar cells with considerably enhanced reproducibility

, 2017
In this work, we demonstrate a one-step room-temperature ethanol-processed nickel oxide (NiOx):electron acceptor nanocomposite functioning as efficient hole transport layer (HTL).
Zhu, Hugh L., Xingang Ren, Zhuang, Jiaqing, Vellaisamy A.L. Roy, Choy, Wallace C.H., Jiaqing Zhuang, Ren, Xingang, Liang, Chunjun, Jiaqi Cheng, Mao, Jian, Hugh L. Zhu, Jian Mao, Roy, Vellaisamy A.L., Chunjun Liang, Wallace C.H. Choy, Cheng, Jiaqi   +15 more
core   +1 more source

Boosting the Performance of Visible/Near-Infrared Organic Photodetectors via Hole Interface Engineering

Nanomaterials
When poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is employed as the hole transport layer in visible/near-infrared photodetectors, the extraction and transport of holes are hindered by the accumulation of the PSS insulating phase at
Yijing Fan, Junquan Luo, Lan Liu, Qiao He, Jiahui Lu, Zhimin Shao, Zhensheng Xu, Zhe Liu, Yun Xia, Xuanye Li, Lintao Hou   +10 more
doaj   +1 more source

Amphoteric Cu‐Doping Leading to High Thermoelectric Performance in p‐Type Bismuth Antimony Telluride

Advanced Functional Materials, EarlyView.
This study shows that Cu plays two opposite roles in p‐type Bi0.5Sb1.5Te3 depending on the processing route. Under thermodynamic‐equilibrium bulk‐synthesis, Cu mainly occupies cation sites, increases hole concentration, preserves mobility, and slightly reduces lattice heat transport. The best‐performing composition among the investigated series reaches
Moritz Thiem, Zhiyuan Li, Minsu Heo, Fangyi Hu, Tian Lan, Youngdeog Koh, Ruiwen Xie, Chuanmu Tian, Marc Widenmeyer, Hyun‐Sik Kim, Jan P. Hofmann, Yuan Yu, Hongbin Zhang, Anke Weidenkaff, G. Jeffrey Snyder, Wenjie Xie   +15 more
wiley   +1 more source