Home >

news Help

Publication Information


Title
Japanese:Simultaneous measurement of photocurrent and recombination emission in organic solar cell 
English:Simultaneous measurement of photocurrent and recombination emission in organic solar cell 
Author
Japanese: J. Lee, M. Hiramoto, 伊澤誠一郎.  
English: J. Lee, M. Hiramoto, S. Izawa.  
Language English 
Journal/Book name
Japanese:Japanese Journal of Applied Physics 
English:Japanese Journal of Applied Physics 
Volume, Number, Page Vol. 61    No. 1    pp. 011001
Published date Jan. 1, 2022 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://dx.doi.org/10.35848/1347-4065/ac4051
 
DOI https://doi.org/10.35848/1347-4065/ac4051
Abstract <jats:title>Abstract</jats:title> <jats:p>Charge transfer (CT) state is a key intermediate to understand recombination processes in organic solar cells (OSCs). In this study, we measured the recombination emission from the CT state under different applied voltages in OSCs and a photocurrent density flowing on the circuit simultaneously. We proposed a “photoluminescence (PL)<jats:italic>–</jats:italic>voltage (<jats:italic>V</jats:italic>) plot” that is the voltage dependence of PL intensity of the CT state. The PL<jats:italic>–V</jats:italic> plot includes information only from the CT state recombination at the donor/acceptor interface and is complementary to the “current density (<jats:italic>J</jats:italic>)<jats:italic>–V</jats:italic> plot” that is the most important information for evaluating OSCs. The results demonstrated that the fill factor (FF) of the PL<jats:italic>–V</jats:italic> plot is higher than that of the <jats:italic>J–V</jats:italic> plot, predicting the ideal FF of the device. Our result demonstrated that the simultaneous measurement of photocurrent and recombination emission could be a strong tool for evaluating photoconversion characteristics in OSCs.</jats:p>

©2007 Tokyo Institute of Technology All rights reserved.