Crystallographic and electrical properties of wide gap Ag(In1-x,Gax)Se2 thin films and solar cells

被引：65

作者：

Yamada, K ^{[1
]}

Hoshino, N ^{[1
]}

Nakada, T ^{[1
]}

机构：

[1] Aoyama Gakuin Univ, Dept Elect Engn & Elect, Sagamihara, Kanagawa 2298558, Japan

来源：

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS | 2006年 / 7卷 / 01期

关键词：

Ag(In; Ga)Se-2; thin films; solar cells; wide gap; electrical properties;

D O I：

10.1016/j.stam.2005.11.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ag(In1-xGax)Se-2 (AIGS) thin films have been deposited on Corning 1737 and Mo-coated soda lime glass substrates by three-stage process using a molecular beam epitaxy (MBE) system. The crystallographic properties of AIGS thin film have been investigated using X-ray diffraction and scanning electron microscope (SEM). Near-stoichiometric AIGS thin films possessed a tetragonal Ag(In,Ga)Se-2 phase with a small amount of tetragonal Ag(In,Ga)(5)Se-8 phase. A tetragonal Ag(In,Ga)Se-2 phase became predominant as Ga/(In+Ga) atomic ratio increased. Hall measurements and thermo probe analysis revealed that AgInSe2 films showed n-type conduction with high electron mobility. A wide gap Ag(In-0.2,Ga-0.8)Se-2 thin film solar cell with a band gap energy of 1.7 eV showed a total-area efficiency of 7.3% (8.0% active area efficiency) with open-circuit voltage V-oc=866 mV, short-circuit current J(sc)=14.5 mA/cm(2), fill factor FF=0.584, and total area=0.42 cm(2). (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：42 / 45

页数：4

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