Analysis of carrier transport in photovoltaic structures of P3HT with CdSe nanocrystals

被引：6
作者：
Kazukauskas, V. [1 ,2 ]
Couderc, E. [3 ]
Sakavicius, A. [1 ,2 ]
Nekrosius, A. [1 ,2 ]
Vertelis, V. [1 ,2 ]
Reiss, P. [3 ]
Djurado, D. [3 ]
Faure-Vincent, J. [3 ]
机构：
[1] Vilnius State Univ, Semicond Phys Dept, LT-10222 Vilnius, Lithuania
[2] Vilnius State Univ, Inst Appl Res, LT-10222 Vilnius, Lithuania
[3] Univ Grenoble, CNRS, CEA, SPrAM Lab,UMR, F-38054 Grenoble, France
来源：
APPLIED SURFACE SCIENCE | 2015年 / 334卷
关键词：
P3HT; CdSe; Nanocrystals; Hybrid solar cells; Mobility; Charge transport; HETEROJUNCTION SOLAR-CELLS; CHARGE-TRANSPORT; PERFORMANCE; MOBILITY; EFFICIENCY; POLYMERS;
D O I：
10.1016/j.apsusc.2014.09.035
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Hybrid photovoltaic structures made of P3HT and branched CdSe nanocrystals (NCs) with 50-90 wt% ratio were investigated. Charge Extraction by Linearly Increasing Voltage (CELIV) mobility and temperature dependent (photo-)conductivity measurements were used to analyze the charge transport. The samples with 50 wt% were photosensitive, but just a minor PV effect was observed. The photovoltaic phenomenon was pronounced in the samples containing 75 wt% or more of NCs. The Open Circuit Voltages up to 1 V were obtained. The recombination of the generated carriers was fast and could be a limiting factor of the cell current. Carrier mobility was up to (3-4) x 10(-4) cm(2)/V s. From the fitting of mobility data the best carrier transport conditions were found in the samples with 75 wt% and 83 wt% of NCs. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：169 / 173
页数：5
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