Flat conduction-band alignment at the CdS/CuInSe2 thin-film solar-cell heterojunction

被引：208

作者：

Morkel, M

Weinhardt, L

Lohmüller, B

Heske, C

Umbach, E

Riedl, W

Zweigart, S

Karg, F

机构：

[1] Univ Wurzburg, D-97074 Wurzburg, Germany

[2] Infineon Technol AG, D-81541 Munich, Germany

[3] Siemens & Shell Solar, D-81739 Munich, Germany

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 27期

关键词：

D O I：

10.1063/1.1428408

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

By combining ultraviolet and x-ray photoelectron spectroscopy with inverse photoemission spectroscopy, we find that the conduction-band alignment at the CdS/CuInSe2 thin-film solar-cell heterojunction is flat (0.0+/-0.2 eV). Furthermore, we observe a valence-band offset of 0.8+/-0.2 eV. The electronic level alignment is dominated by (1) an unusually large surface band gap of the CuInSe2 thin film (1.4 eV), (2) by a reduced surface band gap of the CdS overlayer (2.2 eV) due to intermixing effects, and (3) by a general influence of the intermixing on the chemical state near the interface. (C) 2001 American Institute of Physics.

引用

页码：4482 / 4484

页数：3

共 34 条

[1]

CONTRERAS MA, 1996, UNPUB P 25 IEEE PVSC, P809

[2] Solar cell efficiency tables (version 17) [J].

Green, MA ;

Emery, K ;

King, DL ;

Igari, S ;

Warta, W .

PROGRESS IN PHOTOVOLTAICS, 2001, 9 (01) :49-56

[3] Localization of Na impurities at the buried CdS/Cu(In, Ga)Se2 heterojunction [J].

Heske, C ;

Eich, D ;

Fink, R ;

Umbach, E ;

Kakar, S ;

van Buuren, T ;

Bostedt, C ;

Terminello, LJ ;

Grush, MM ;

Callcott, TA ;

Himpsel, FJ ;

Ederer, DL ;

Perera, RCC ;

Riedl, W ;

Karg, F .

APPLIED PHYSICS LETTERS, 1999, 75 (14) :2082-2084

[4] Observation of intermixing at the buried CdS/Cu(In,Ga)Se2 thin film solar cell heterojunction [J].

Heske, C ;

Eich, D ;

Fink, R ;

Umbach, E ;

van Buuren, T ;

Bostedt, C ;

Terminello, LJ ;

Kakar, S ;

Grush, MM ;

Callcott, TA ;

Himpsel, FJ ;

Ederer, DL ;

Perera, RCC ;

Riedl, W ;

Karg, F .

APPLIED PHYSICS LETTERS, 1999, 74 (10) :1451-1453

[5]

Heske C., 1996, CRYST RES TECHNOL, V31, P919

[6] THIN-FILM CULNSE2-CDS HETEROJUNCTION SOLAR-CELLS [J].

KAZMERSKI, LL ;

WHITE, FR ;

MORGAN, GK .

APPLIED PHYSICS LETTERS, 1976, 29 (04) :268-270

[7]

KAZMERSKI LL, 1978, UNPUB P 13 IEEE PVSC, P184

[8] Characterisation and modelling of chalcopyrite solar cells [J].

Klenk, R .

THIN SOLID FILMS, 2001, 387 (1-2) :135-140

[9] BAND DIAGRAM OF THE POLYCRYSTALLINE CDS/CU(IN,GA)SE-2 HETEROJUNCTION [J].

KRONIK, L ;

BURSTEIN, L ;

LEIBOVITCH, M ;

SHAPIRA, Y ;

GAL, D ;

MOONS, E ;

BEIER, J ;

HODES, G ;

CAHEN, D ;

HARISKOS, D ;

KLENK, R ;

SCHOCK, HW .

APPLIED PHYSICS LETTERS, 1995, 67 (10) :1405-1407

[10]

Liu XX, 1996, AIP CONF PROC, P444

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