Effect of an additional Cu-deficient layer deposition on alkali treated Cu(In, Ga)Se2 solar cells deposited at low temperature

被引：9

作者：

Sadono, Adiyudha ^{[1
]}

Hino, Masashi ^{[3
]}

Nakada, Kazuyoshi ^{[2
]}

Yamada, Akira ^{[2
]}

机构：

[1] Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, Tokyo 1528552, Japan

[2] Tokyo Inst Technol, Dept Elect & Elect Engn, Meguro Ku, Tokyo 1528552, Japan

[3] Kaneka Corp, Osaka 5660072, Japan

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2018年 / 184卷

关键词：

Cu(In Ga)Se-2; Alkali treatment; Cu-deficient; Chalcopyrite; CU(IN; GA)SE-2; THIN-FILMS; POSTDEPOSITION TREATMENT; EFFICIENCIES;

D O I：

10.1016/j.solmat.2018.04.030

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：

In this work, we found that the deposition of a Cu-deficient layer after alkali post-deposition treatment (PDT) of Cu(In,Ga)Se-2 (CIGS) at low temperature (450 degrees C) effectively improves the performance of CIGS solar cells. Compared to the CGIS with only the alkali PDT, the deposition of the Cu-deficient layer leads to the formation of larger holes on the surface and results in higher efficiency. The conversion efficiency improved from 11% to 16% after alkali PDT and Cu-deficient layer deposition because of a passivation effect. The formation of a passivation layer after both alkali treatment and Cu-deficient layer deposition was observed by TEM-EDX, showing that the deposition of the Cu-deficient layer could contribute to a low Cu surface composition. Finally, the effect on the CIGS and CdS interface was analyzed using electron-beam-induced current measurement (EBIC).

引用

页码：67 / 72

页数：6

共 34 条

[1] Growth of Cu(In,Ga)Se2 thin films by coevaporation using alkaline precursors [J].

Ård, MB ;

Granath, K ;

Stolt, L .

THIN SOLID FILMS, 2000, 361 :9-16

[2]

B Reed T., 1971, FREE ENERGY FORMATIO

[3]

Chirila A, 2013, NAT MATER, V12, P1107, DOI [10.1038/NMAT3789, 10.1038/nmat3789]

[4]

Chirila A, 2011, NAT MATER, V10, P857, DOI [10.1038/nmat3122, 10.1038/NMAT3122]

[5] Band-gap engineering in Cu(In,Ga)Se-2 thin films grown from (In,Ga)(2)Se-3 precursors [J].

Gabor, AM ;

Tuttle, JR ;

Bode, MH ;

Franz, A ;

Tennant, AL ;

Contreras, MA ;

Noufi, R ;

Jensen, DG ;

Hermann, AM .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 1996, 41-2 :247-260

[6] Potassium Postdeposition Treatment-Induced Band Gap Widening at Cu(In,Ga)Se2 Surfaces - Reason for Performance Leap? [J].

Handick, Evelyn ;

Reinhard, Patrick ;

Alsmeier, Jan-Hendrik ;

Koehler, Leonard ;

Pianezzi, Fabian ;

Krause, Stefan ;

Gorgoi, Mihaela ;

Ikenaga, Eiji ;

Koch, Norbert ;

Wilks, Regan G. ;

Buecheler, Stephan ;

Tiwari, Ayodhya N. ;

Baer, Marcus .

ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (49) :27414-27420

[7] Alkali incorporation control in Cu(In, Ga)Se2 thin films using silicate thin layers and applications in enhancing flexible solar cell efficiency [J].

Ishizuka, Shogo ;

Yamada, Akimasa ;

Matsubara, Koji ;

Fons, Paul ;

Sakurai, Keiichiro ;

Niki, Shigeru .

APPLIED PHYSICS LETTERS, 2008, 93 (12)

[8] Effects of heavy alkali elementsin Cu(In,Ga)Se2 solar cells with efficiencies up to 22.6% [J].

Jackson, Philip ;

Wuerz, Roland ;

Hariskos, Dimitrios ;

Lotter, Erwin ;

Witte, Wolfram ;

Powalla, Michael .

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2016, 10 (08) :583-586

[9] Properties of Cu(In,Ga)Se2 solar cells with new record efficiencies up to 21.7% [J].

Jackson, Philip ;

Hariskos, Dimitrios ;

Wuerz, Roland ;

Kiowski, Oliver ;

Bauer, Andreas ;

Friedlmeier, Theresa Magorian ;

Powalla, Michael .

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2015, 9 (01) :28-31

[10] Compositional investigation of potassium doped Cu(In,Ga)Se2 solar cells with efficiencies up to 20.8% [J].

Jackson, Philip ;

Hariskos, Dimitrios ;

Wuerz, Roland ;

Wischmann, Wiltraud ;

Powalla, Michael .

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2014, 8 (03) :219-222

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