Comparison of lift-off processes and rear-surface characterization of Cu(In,Ga)Se2 thin films for solar cells

被引：26

作者：

Anegawa, T. ^{[1
]}

Oda, Y. ^{[1
]}

Minemoto, T. ^{[1
]}

Takakura, H. ^{[1
]}

机构：

[1] Ritsumeikan Univ, Coll Sci & Engn, Shiga 5258577, Japan

来源：

JOURNAL OF CRYSTAL GROWTH | 2009年 / 311卷 / 03期

关键词：

Semiconducting quaternary compounds; Solar cells; EFFICIENCY;

D O I：

10.1016/j.jcrysgro.2008.09.136

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Thick glasses are commonly used as substrates of Cu(In,Ga)Se-2 (CIGS) solar cells because it is needed to deposit CIGS layers at high temperature to realize high efficiency solar cells. In this study, we attempted to separate 2 pm-thick CIGS layers from the primary substrates using a lift-off process and subsequently to transfer them onto the alternative substrates to be free the choice of substrates. In the lift-off process, the CIGS layers were bonded to alternative substrates with adhesives and separated from Mo-coated soda lime glasses (SLG) by tensile strain. As the alterative substrates with an adhesive, a silicone adhesive on polyimide (PI) film, an Al double-faced adhesive tape on SLG, and an epoxy on SLG and PI film were used. Among them, the epoxy on SLG and PI tape were suitable to detach the CIGS layer from the primary substrate with a low crack density. Also, the rear-surface of the detached CIGS film was very flat. CIGS solar cells fabricated based on the detached CIGS layers by the lift-off process using the epoxy on SLG showed a conversion efficiency of 3%. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：742 / 745

页数：4

共 10 条

[1] Preferred orientation control of Cu(In1-xGax)Se2 (x ≈ 0.28) thin films and its influence on solar cell characteristics [J].

Chaisitsak, S ;

Yamada, A ;

Konagai, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2002, 41 (2A) :507-513

[2]

Contreras MA, 1999, PROG PHOTOVOLTAICS, V7, P311, DOI 10.1002/(SICI)1099-159X(199907/08)7:4<311::AID-PIP274>3.0.CO

[3]

2-G

[4] Production technology for CIGS thin film solar cells [J].

Negami, T ;

Satoh, T ;

Hashimoto, Y ;

Shimakawa, S ;

Hayashi, S ;

Muro, M ;

Inoue, H ;

Kitagawa, M .

THIN SOLID FILMS, 2002, 403 :197-203

[5] High-efficiency flexible CdTe solar cells on polymer substrates [J].

Romeo, A. ;

Khrypunov, G. ;

Kurdesau, F. ;

Arnold, M. ;

Baetzner, D. L. ;

Zogg, H. ;

Tiwari, A. N. .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2006, 90 (18-19) :3407-3415

[6]

RUCKH M, 1994, IEEE PHOT SPEC CONF, P156, DOI 10.1109/WCPEC.1994.519831

[7] Substrate influence on Cu(In,Ga)Se2 film texture [J].

Schlenker, T ;

Laptev, V ;

Schock, HW ;

Werner, JH .

THIN SOLID FILMS, 2005, 480 :29-32

[8] Epitaxial lift-off process for GaAs solar cell on Si substrate [J].

Taguchi, H ;

Soga, T ;

Jimbo, T .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2005, 85 (01) :85-89

[9] Epitaxial lift-off GaAs solar cell from a reusable GaAs substrate [J].

vanGeelen, A ;

Hageman, PR ;

Bauhuis, GJ ;

vanRijsingen, PC ;

Schmidt, P ;

Giling, LJ .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1997, 45 (1-3) :162-171

[10]

Wada T., 1998, Proceedings of the 2nd, P403

← 1 →