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

页码：169 / 173

页数：5

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