Results 101 to 110 of about 3,099 (255)

Defect‐Functionalization‐Mediated Tunneling Drives Nonlinear Photoemission in Perovskites

Advanced Science, EarlyView.
This cover illustration depicts CsPbBr3 perovskite nanocrystals embedded with functionalized defect vacancies, where electrons migrate through defect‐mediated pathways and emit as lightning‐like beams. The imagery visualizes the core discovery of our work—defect‐functionalization‐mediated tunneling enabling nonlinear photoemission, where deep‐level ...
Hang Ren, Xi Zhang, Yicheng Wang, Shuai Wang, Zhi Wang, Yumeng Li, Jikai Yang, Xin Wang, Weijun Chen, Yining Mu   +9 more
wiley   +1 more source

Study of charge injection mechanisms in organic field effect transistors using Kelvin Probe Force Microscopy (KPFM)

, 2021
Cette thèse porte sur l’étude de transistors organiques en couches minces (OTFT) par la méthode de microscopie à sonde de Kelvin (KPFM), en particulier sur l’études des contacts, et sur le développement de la méthode KPFM.
Brouillard, Mélanie
core  

Ambipolar Organic–Inorganic Heterostructure Transistor Array for Integrated Visual Information Processing

Advanced Science, EarlyView.
We present an organic–inorganic heterostructure transistor array for neuromorphic computing, achieving 95.6% MNIST accuracy and 1.2 fJ per operation, with dynamic spatiotemporal encoding and precise vehicle direction detection under combined optical and electrical stimulation.
Wen‐Min Zhong, Wenbin Zhang, Yu‐Xiang Zeng, JiYu Zhao, Ziqi Jia, Loganathan Veeramuthu, Guanglong Ding, Yan Yan, Meng Zhang, Su‐Ting Han, Vellaisamy A. L. Roy, Fengyun Wang, Chi‐Ching Kuo, Ye Zhou   +13 more
wiley   +1 more source

Local V OC Measurements by Kelvin Probe Force Microscopy Applied on P-I-N Radial Junction Si Nanowires

Nanoscale Research Letters, 2019
This work focuses on the extraction of the open circuit voltage (V OC) on photovoltaic nanowires by surface photovoltage (SPV) based on Kelvin probe force microscopy (KPFM) measurements.
Clément Marchat, Letian Dai, José Alvarez, Sylvain Le Gall, Jean-Paul Kleider, Soumyadeep Misra, Pere Roca i Cabarrocas   +6 more
doaj   +1 more source

Electrochemical Modulation of Laser‐Induced Covalent Functionalization of Graphene

Advanced Science, EarlyView.
Photoelectrochemical functionalization of graphene introduces the electrochemical potential as an additional parameter for the laser‐induced covalent modification of graphene. Tuning of the potential allows for amplification or suppression of the functionalization reaction with constant laser parameters, which enables in situ Raman analysis of ...
Tamara Nagel, Linda Feuerstein, Kevin Gerein, Stefan Wolff, Janina Maultzsch, Andreas Hirsch, Inez M. Weidinger, Frank Hauke   +7 more
wiley   +1 more source

Phase Transformations in Evaporated Ph‐BTBT‐10 Thin Films and Impact on the Device Performance

Advanced Materials Interfaces
This paper reports on the phase transformation occurring in evaporated thin films of the organic semiconductor 2‐decyl‐7‐phenyl[1]benzothieno[3,2‐b][1]benzothiophene (Ph‐BTBT‐10), along with its impact on the performance of organic thin‐film field‐effect
Lamiaa Fijahi, Shunya Yan, Ann Maria James, Min Zhang, Alba Cazorla, Adrián Tamayo, Jinghai Li, Carmen Ocal, Esther Barrena, Roland Resel, Marta Mas‐Torrent   +10 more
doaj   +1 more source

Lunar‐Based Photothermal CO2 Reduction Strategy: Self‐Evolving Transient Active Interface and Band Engineering

Advanced Science, EarlyView.
A self‐evolving Pd/Ov‐FeTiO3 photothermal catalyst, inspired by lunar soil, enables efficient extraterrestrial CO2 conversion. The formation of transient active interfaces and oxygen vacancies extends light absorption to the infrared range and optimizes electron transfer.
Yahang Wang, Yuhuan Li, Quanxin Wang, Deng Li, Pakkin Leong, Meng Wang, Shi Feng, Runyang Mo, Xianjin Shi, Xiaohui Li, Gangqiang Zhu, Chipui Tang   +11 more
wiley   +1 more source

Dipole‐Manipulated Built‐In Electric Field Enables Ultrafast Charge Separation in Perylene Diimide Polymers for Photoelectrochemical Water Splitting

Advanced Science, EarlyView.
Molecular dipole engineering in dendritic perylene diimide polymers through nitrogen‐rich heterocyclic linkers amplifies the built‐in electric field, enabling sub‐picosecond charge separation and efficient multi‐electron accumulation. This structure–dynamics–performance relationship establishes a versatile design strategy for high‐performance organic ...
Ying‐Xin Qiao, Zicong Situ, Yi‐Jing Chen, Shuo‐Xiang Liu, Jing‐Lan Zhang, Xingqing Li, Luo‐Han Xie, Si‐Hang Xie, Qing‐Xiao Tong, Andong Xia, Zhuoran Kuang, Jing‐Xin Jian   +11 more
wiley   +1 more source

Study of injection and trapping mechanisms of electrical charges in thin dielectric films by Kelvin probe force microscopy (KPFM)

, 2015
One of the intrinsic properties of dielectrics is to accumulate electrical charges when subjected to external stresses (temperature, electrical field ...). This property can be helpful for some applications (DRAM...), but leads generally to failure of the device (micro-system...).
openaire   +1 more source

Topologically Structured PLLA Fibers With Stress Concentration Effects for Health Monitoring

Advanced Science, EarlyView.
In this study, a multi‐path strategy was developed to enhance the piezoelectric properties of PLLA fibers through the stress concentration effect. The optimized devices generate piezoelectric output up to 14 times that of pure PLLA fibers. This piezoelectric enhancement strategy offers a new approach for high‐performance piezoelectric devices, with ...
Longfei Li, Juwei Yang, Yiqian Wang, Qiao Yu, Zhenmin Fan, Chang Zhu, Ming Yin, Wei Hua, Zhou Li   +8 more
wiley   +1 more source