title: Energy level control: toward an efficient hot electron transport.
abstract: Highly efficient hot electron transport represents one of the most important properties required for applications in photovoltaic devices. Whereas the fabrication of efficient hot electron capture and lost-cost devices remains a technological challenge, regulating the energy level of acceptor-donor system through the incorporation of foreign ions using the solution-processed technique is one of the most promising strategies to overcome this obstacle. Here we present a versatile acceptor-donor system by incorporating MoO3:Eu nanophosphors, which reduces both the 'excess' energy offset between the conduction band of acceptor and the lowest unoccupied molecular orbital of donor, and that between the valence band and highest occupied molecular orbital. Strikingly, the hot electron transfer time has been shortened. This work demonstrates that suitable energy level alignment can be tuned to gain the higher hot electron/hole transport efficiency in a simple approach without the need for complicated architectures. This work builds up the foundation of engineering building blocks for third-generation solar cells.
authors.affiliation: Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, 330063, P. R. China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Jin
authors.affiliation: Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, 330063, P. R. China.
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Li
authors.affiliation: Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, 330063, P. R. China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Li
authors.affiliation: Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, 330063, P. R. China.
authors.forename: Zihan
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Department of Physics, National Chung-Cheng University, Chia-Yi 621, Taiwan, Republic of China.
authors.forename: Tai-Huei
authors.initials: TH
authors.lastname: Wei
authors.affiliation: Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, 330063, P. R. China.
authors.forename: Xingdao
authors.initials: X
authors.lastname: He
authors.affiliation: School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
authors.forename: Weifu
authors.initials: W
authors.lastname: Sun
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