Surface modification enabled carrier mobility adjustment in CZTS nanoparticle thin films

被引：19

作者：

Huang, Wenxiao ^{[1
]}

Li, Qi ^{[1
]}

Chen, Yonghua ^{[1
]}

Xia, Yingdong ^{[1
]}

Huang, Huihui ^{[1
]}

Dun, Chaochao ^{[1
]}

Li, Yuan ^{[1
]}

Carroll, David L. ^{[1
]}

机构：

[1] Wake Forest Univ, Dept Phys, Ctr Nanotechnol & Mol Mat, Winston Salem, NC 27109 USA

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2014年 / 127卷

关键词：

CZTS; Ligand; CU2ZNSNS4; NANOCRYSTALS;

D O I：

10.1016/j.solmat.2014.04.027

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

As the essential building blocks of many electronic devices, solid state thin-films are attracting extensive interest. Soluble nanocrystals (NCs) make it possible to develop robust, low-cost, large-scale fabrication methods for thin-films. However, the organic surface ligands normally used to stabilize the NCs make those thin-films a NC-ligand complex which may possess varied electrical performance compared to a single component system. Previous models could only estimate the charge transportation characteristics in those films quantitatively by considering the capping ligands as a barrier of charges from inter-particle hopping. In this work, we demonstrated that starting from first principles density functional theory, the carrier mobility in a CZTS NC-ligand complex can be determined quantitatively, and guided by this model, we developed a low-cost, low-temperature technique to fabricate CZTS thin films which have a carrier mobility of up to 10.9 cm(2)/(VS). (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：188 / 192

页数：5

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