Zohar, Arava Kulbak, Michael Turren-Cruz, Silver H Nayak, Pabitra K Kama, Adi Hagfeldt, Anders Snaith, Henry J Hodes, Gary Cahen, David
Published in
ACS applied materials & interfaces
The origin of the low densities of electrically active defects in Pb halide perovskite (HaP), a crucial factor for their use in photovoltaics, light emission, and radiation detection, remains a matter of discussion, in part because of the difficulty in determining these densities. Here, we present a powerful approach to assess the defect densities,...
qu;, ji siqi
Electrochemical surface-enhanced Raman scattering (EC-SERS) spectroscopy is an ultrasensitive spectro-electrochemistry technique that provides mechanistic and dynamic information on electrochemical interfaces at the molecular level. However, the plasmon-mediated photocatalysis hinders the intrinsic electrochemical behavior of molecules at electroch...
Tiwari, Devendra Yakushev, Michael V Koehler, Tristan Cattelan, Mattia Fox, Neil Martin, Robert W Klenk, Reiner Férmin, David J
Published in
ACS applied energy materials
The sub-bandgap levels associated with defect states in Cu2ZnSnS4 (CZTS) thin films are investigated by correlating the temperature dependence of the absorber photoluminescence (PL) with the device admittance spectroscopy. CZTS thin films are prepared by thermolysis of molecular precursors incorporating chloride salts of the cations and thiourea. N...
Amakali, Theopolina Živković, Aleksandar Warwick, Michael E. A. Jones, Daniel R. Dunnill, Charles W. Daniel, Likius S. Uahengo, Veikko Mitchell, Claire E. Dzade, Nelson Y. de Leeuw, Nora H.
...
Published in
Frontiers in Chemistry
Metal sulphides, including zinc sulphide (ZnS), are semiconductor photocatalysts that have been investigated for the photocatalytic degradation of organic pollutants as well as their activity during the hydrogen evolution reaction and water splitting. However, devising ZnS photocatalysts with a high overall quantum efficiency has been a challenge d...
Macpherson, Stuart
Global economies are transitioning towards net-zero emissions, but technological leaps are still needed to accelerate decarbonisation within the energy sector and beyond. Here, several novel material systems are studied to uncover physical properties which will dictate their suitability for use in state-of-the-art light-harvesting structures such a...
Jiao, Yajie Hu, Rongjing Wang, Qian Fu, Fengfu Chen, Lichan Dong, Yongqiang Lin, Zhenyu
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
The effects of defect states on the fluorescence (FL) and electrochemiluminescence (ECL) properties of graphite phase carbon nitride (g-CN) are systematically investigated for the first time. The g-CN nanosheets (CNNSs) obtained at different condensation temperatures are used as the study models. It can be found that all the CNNSs have two kinds of...
Davydov, S. Yu.
Published in
Physics of the Solid State
AbstractBy analogy with graphane and fluorographene, a model of graphane-like h-AB–C compounds is proposed, in which atoms A and B occupy sites of a plane hexagonal lattice and C atoms bounded with atoms A and B are arranged by the opposite sides from the AB plane. Numerical estimations are performed for the h-A3B5–C4 compounds, where atoms A, B, a...
Fatti, G Righi, M Dini, D Ciniero, A
Polytetrafluoroethylene (PTFE) is one of the most efficient polymers for green energy-harvesting devices like triboelectric nanogenerators because of its high capability of acquiring and retaining negative charge. Despite its extensive use, the relation between PTFE triboelectric behavior and its electronic properties has never been analyzed. To sh...
Azam, Muhammad Yue, Shizhong Xu, Rui Yang, Shuaijian Liu, Kong Huang, Yanbin Sun, Yang Hassan, Ali Ren, Kuankuan Tan, Furui
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Published in
ACS applied materials & interfaces
The development of highly crystalline perovskite films with large crystal grains and few surface defects is attractive to obtain high-performance perovskite solar cells (PSCs) with good device stability. Herein, we simultaneously improve the power conversion efficiency (PCE) and humid stability of the CH3NH3PbI3 (CH3NH3 = MA) device by incorporatin...
Han, Boning Yuan, Shichen Fang, Tao Zhang, Fengjuan Shi, Zhifeng Song, Jizhong
Published in
ACS applied materials & interfaces
Metal halide perovskites have been focused as a candidate applied as a promising luminescent material for next-generation high-quality lighting and high-definition display. However, as perovskite films formed, high density of defects would be produced in solution processing inevitably, leading to low exciton recombination efficiency in light-emitti...
