Electronic structure of the Zn(O,S)/Cu(In,Ga)Se2 thin-film solar cell interface

被引：29

作者：

Mezher, Michelle ^{[1
]}

Garris, Rebekah ^{[2
]}

Mansfield, Lorelle M. ^{[2
]}

Horsley, Kimberly ^{[1
]}

Weinhardt, Lothar ^{[1
,3
,4
,5
]}

Duncan, Douglas A. ^{[1
]}

Blum, Monika ^{[1
]}

Rosenberg, Samantha G. ^{[1
]}

Baer, Marcus ^{[1
,6
,7
]}

Ramanathan, Kannan ^{[2
]}

Heske, Clemens ^{[1
,3
,4
,5
]}

机构：

[1] Univ Nevada, Dept Chem & Biochem, 4505 S Maryland Pkwy,Box 454003, Las Vegas, NV 89154 USA

[2] Natl Renewable Energy Lab, Golden, CO 80401 USA

[3] Karlsruhe Inst Technol, Inst Photon Sci & Synchrotron Radiat IPS, D-76344 Eggenstein Leopoldshafen, Germany

[4] Karlsruhe Inst Technol, ANKA Synchrotron Radiat Facil, D-76344 Eggenstein Leopoldshafen, Germany

[5] Karlsruhe Inst Technol, Inst Chem Technol & Polymer Chem, D-76128 Karlsruhe, Germany

[6] Helmholtz Zentrum Berlin Mat & Energie GmbH, Renewable Energy, D-14109 Berlin, Germany

[7] Brandenburg Tech Univ Cottbus Senftenberg, Inst Phys & Chem, D-03046 Cottbus, Germany

来源：

PROGRESS IN PHOTOVOLTAICS | 2016年 / 24卷 / 08期

关键词：

chalcopyrite thin-film solar cell; band alignment; alternative buffer layers; Zn(O; S); X-ray spectroscopy; inverse photoemission; CHEMICAL BATH DEPOSITION; BAND ALIGNMENT; JUNCTION FORMATION; ZN(O; S); IMPACT; LAYER; GAP;

D O I：

10.1002/pip.2764

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：

The electronic band alignment of the Zn(O,S)/Cu(In,Ga)Se-2 interface in high-efficiency thin-film solar cells was derived using X-ray photoelectron spectroscopy, ultra-violet photoelectron spectroscopy, and inverse photoemission spectroscopy. Similar to the CdS/Cu(In,Ga)Se-2 system, we find an essentially flat (small-spike) conduction band alignment (here: a conduction band offset of (0.09 +/- 0.20)eV), allowing for largely unimpeded electron transfer and forming a likely basis for the success of high-efficiency Zn(O,S)-based chalcopyrite devices. Furthermore, we find evidence for multiple bonding environments of Zn and O in the Zn(O,S) film, including ZnO, ZnS, Zn(OH)(2), and possibly ZnSe. Copyright (c) 2016 John Wiley & Sons, Ltd.

引用

页码：1142 / 1148

页数：7

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