Results 111 to 120 of about 3,573 (286)

A scanning probe microscopy study of nanostructured TiO2/poly(3-hexylthiophene) hybrid heterojunctions for photovoltaic applications

Beilstein Journal of Nanotechnology, 2018
The nanoscale morphology of photoactive hybrid heterojunctions plays a key role in the performances of hybrid solar cells. In this work, the heterojunctions consist of a nanocolumnar TiO2 surface covalently grafted with a monolayer of poly(3 ...
Laurie Letertre, Roland Roche, Olivier Douhéret, Hailu G. Kassa, Denis Mariolle, Nicolas Chevalier, Łukasz Borowik, Philippe Dumas, Benjamin Grévin, Roberto Lazzaroni, Philippe Leclère   +10 more
doaj   +1 more source

The resistive switching in TiO2 films studied by conductive atomic force microscopy and Kelvin probe force microscopy

AIP Advances, 2013
The resistive switching characteristics of TiO2 thin films were investigated using conductive atomic force microscopy (CAFM) and Kelvin probe force microscopy (KPFM).
Yuanmin Du, Amit Kumar, Hui Pan, Kaiyang Zeng, Shijie Wang, Ping Yang, Andrew Thye Shen Wee   +6 more
doaj   +1 more source

Diffusion of Pb on Si studied by SFM and KPFM

Nanostructuring of surfaces, self-organization of structures and low dimensional systems are just a few points for which a precise understanding of diffusion, in particular surface diffusion, is important [1, 2, 3]. Pb/Si(111)-(7 × 7) exhibits unexpectedly fast diffusion.
openaire   +2 more sources

Sustainable Synaptic Device with Two‐Dimensional Ferroelectric Materials for Neuromorphic Computing

Advanced Science, EarlyView.
α‐In2Se3 based FeSFETs can be utilized as sustainable devices through polarization switching governed by both out‐of‐plane and in‐plane polarizations. Upon reaching a fatigued state, current annealing enabled by conductance modulation can significantly enhance the endurance of FeSFETs.
Jaewook Yoo, Seokjin Oh, Minah Park, Jong Min Song, Hongseung Lee, Seohyeon Park, Sojin Jung, Seongbin Lim, Soohyun Lim, Dongsun Shin, Ji Won Heo, TaeWan Kim, Hagyoul Bae   +12 more
wiley   +1 more source

Macroscopic versus microscopic photovoltaic response of heterojunctions based on mechanochemically prepared nanopowders of kesterite and n-type semiconductors

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2017
Mechanochemically prepared nanopowder of selenium-free kesterite Cu2ZnSnS4 (CZTS) in combination with n-type semiconductors, i.e., CdS, ZnO and TiO2, was tested in planar and bulk-heterojunction solar cells.
O.P. Dimitriev, D.O. Grynko, A.M. Fedoryak, T.P. Doroshenko, M. Kratzer, C. Teichert, Yu.V. Noskov, N.A. Ogurtsov, A.A. Pud, P. Balaz, M. Balaz, M. Tesinsky   +11 more
doaj   +1 more source

Electronic‐State Polarization Engineering‐Regulated Fluorinated Covalent Organic Framework Nanocables for Fast Lithium‐Ion Storage

Advanced Science, EarlyView.
Electronic‐state polarization engineering is realized by constructing fluorinated COF nanocables on conductive CNTs scaffolds. The polar C─F units generate localized electric fields and strong ion‐dipole interactions, promoting Li+ adsorption and transport.
Kaifu Xu, Jianfei Shi, Yuting Qin, Di He, Chengyin Wang, Tianyi Wang   +5 more
wiley   +1 more source

In Situ KPFM Imaging of Local Photovoltaic Characteristics of Structured Organic Photovoltaic Devices

, 2016
Here, we discuss the local photovoltaic characteristics of a structured bulk heterojunction, organic photovoltaic devices fabricated with a liquid carbazole, and a fullerene derivative based on analysis by scanning kelvin probe force microscopy (KPFM ...
Atsushi Kimoto (1269732), Takashi Yamashita (1786006), Yasumasa Fukuchi (1846231), Masanobu Uchiyama (1466110), Mutsuyoshi Matsumoto (1846222), Yusuke Tajima (1846225), Satoshi Watanabe (103008), Tetsuya Aoyama (1846228), Masako Fukasawa (1846219), Takafumi Sassa (1550959)   +9 more
core   +1 more source

Electrostatic Potential Complementarity for Thickness‐Tolerant Cathode Interlayers in High‐Efficiency Organic and Tandem Solar Cells

Advanced Science, EarlyView.
Two model molecules — trimesic acid (TMA) and phloroglucinol (PG) — with opposite central electrostatic potential (ESP) distributions are employed to elucidate how molecular electrostatic interactions regulate the cathode interlayer (CIL) PDINN. Electrostatic potential complementarity is revealed as the intrinsic origin of thickness sensitivity in CILs,
Xiaoman Ding, Dana Mukasheva, Jiaxu Che, Guangye Zhang, Xiuze Hei, Haoran Lin, Jie Lv, Patrick Fong, Zhiwei Ren, Annie Ng, Mingjian Yuan, Hongyu Zhang, Gang Li, Hanlin Hu   +13 more
wiley   +1 more source

Synaptic κ‐Ga2O3 Photodetectors for Privacy‐Enhancing Neuromorphic Computing

Advanced Science, EarlyView.
We report on a single‐element neuromorphic sensor based on the persistent photoconductivity (PPC) of κ‐phase Ga2O3 capable of sensing ultraviolet light and harnessing intrinsic data privacy. The approach establishes a materials‐enabled pathway toward compact, intelligent, and privacy‐enhancing optoelectronic hardware for next‐generation edge systems ...
Yanqing Jia, Heming Lin, Hongliang Chang, Wenqing Niu, Yue Wang, Hang Lu, Abdullah AlQuwayzani, Yara Banda, Long Chen, Qingxiao Wang, Bambar Davaasuren, Mohamed Ben Hassine, Tien Khee Ng, Boon S. Ooi   +13 more
wiley   +1 more source

Modulating the Charge Transfer Channels via Constructing Charge‐Assisted Hydrogen‐Bonded Organic Frameworks for Enhanced Photosynthesis of Hydrogen Peroxide

Advanced Science, EarlyView.
This work reports a strategy of engineering charge‐assisted hydrogen bonds to tailor charge transfer channels in HOFs, significantly improving their performance in photocatalytic H2O2 production. ABSTRACT The production of H2O2 via artificial photosynthesis is often limited by inefficient charge‐carrier separation, causing significant charge ...
Yajun Zhao, Xianzhi Lan, Tiantian Chen, Qijie Mo, Chao Peng, Jianbo Jia, Jiewei Liu, Cheng‐Yong Su   +7 more
wiley   +1 more source