Inhibiting radiative recombination rate to enhance quantum yields in a quantum photocell  

作　　者：Jing-Yi Chen Shun-Cai Zhao 陈镜伊;赵顺才(Department of Physics,Faculty of Science,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]Department of Physics,Faculty of Science,Kunming University of Science and Technology,Kunming 650500,China

出　　处：《Chinese Physics B》2020年第6期197-201,共5页中国物理B（英文版）

基　　金：National Natural Science Foundation of China(Grant Nos.61565008 and 61205205);the General Program of Yunnan Applied Basic Research Project,China(Grant No.2016FB009).

摘　　要：Inhibiting the radiative radiation is an efficient approach to enhance quantum yields in a solar sell.This work carries out the inhibition of radiative recombination rate(RRR)in a quantum photocell with two coupled donors.We perform explicit calculations of the transition rates,energy gaps and the absorbed solar wavelength-dependent RRR,and find that two different regimes play the crucial roles in inhibiting RRR.One is the quantum coherence generated from two different transition channels,the other includes the absorbed photon wavelength and gaps between the donor and acceptor in this proposed photocell model.The results imply that there may be some efficient ways to enhance the photoelectron conversion compared to the classic solar cell.

关 键 词：radiation recombination rate photoelectric conversion efficiency quantum photocell 

分 类 号：O413[理学—理论物理] TM914.4[理学—物理]