Effect of selenization on local current and surface potential of sputtered Cu2ZnSn(S,Se)4 thin-films with 8% conversion efficiency

被引：0

作者：

Kim, Gee Yeong ^{[1
]}

Jeong, Ah Reum ^{[1
]}

Kim, Ju Ri ^{[1
]}

Jo, William ^{[1
]}

Kim, D. H. ^{[2
]}

Hwang, D. K. ^{[2
]}

Sung, S. J. ^{[2
]}

Kang, J. K. ^{[2
]}

机构：

[1] Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea

[2] Daegu Gyeongbuk Inst Sci & Technol, Daegu 711873, South Korea

来源：

2013 IEEE 39TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC) | 2013年

关键词：

CZTSSe; Scanning probe microscopy; Selenization; Work function; Carrier transport; SOLAR-CELLS;

D O I：

暂无

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：

Cu2ZnSn(S,Se)(4) (CZTSSe) is emerged as a promising material because of non-toxic, inexpensive and earth abundant more than Cu(In,Ga)Se-2. The highest conversion efficiency of CZTSSe is 11.1 % at IBM based on hydrazine process [1]. We have achieved CZTSSe thin-film solar cell 8% conversion efficiency by sputtering process. CZTSSe thin-films show different efficiency depending on selenization process. Depending on the different selenization process, conversion efficiencies in each sample are definitely distinguished from 8.06 to 3.17%. We investigated local electrical properties on these samples. The local surface potential is also critically different, which is similar to 200 mV on 8.06% film and similar to 70 mV on 3.17% film. From these results, we can suggest that selenization process can affect to local electrical characteristic as well as improving solar cell performances.

引用

页码：383 / 385

页数：3

共 10 条

[1] Current routes in polycrystalline CuInSe2 and Cu(In,Ga)Se2 films [J].

Azulay, Doron ;

Millo, Oded ;

Balberg, Isaac ;

Schock, Hans-Werner ;

Visoly-Fisher, Iris ;

Cahen, David .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2007, 91 (01) :85-90

[2] Why CuInGaSe2 and CdTe polycrystalline thin film solar cells are more efficient than the corresponding single crystal? [J].

Bosio, A ;

Romeo, N ;

Podestà, A ;

Mazzamuto, S ;

Canevari, V .

CRYSTAL RESEARCH AND TECHNOLOGY, 2005, 40 (10-11) :1048-1053

[3] Electronic structure and stability of quaternary chalcogenide semiconductors derived from cation cross-substitution of II-VI and I-III-VI2 compounds [J].

Chen, Shiyou ;

Gong, X. G. ;

Walsh, Aron ;

Wei, Su-Huai .

PHYSICAL REVIEW B, 2009, 79 (16)

[4] Enhanced exciton separation through negative energy band bending at grain boundaries of Cu2ZnSnSe4 thin-films [J].

Jeong, A. R. ;

Jo, W. ;

Jung, S. ;

Gwak, J. ;

Yun, J. H. .

APPLIED PHYSICS LETTERS, 2011, 99 (08)

[5] Does the local built-in potential on grain boundaries of Cu(In,Ga)Se2 thin films benefit photovoltaic performance of the device? [J].

Jiang, CS ;

Noufi, R ;

Ramanathan, K ;

AbuShama, JA ;

Moutinho, HR ;

Al-Jassim, MM .

APPLIED PHYSICS LETTERS, 2004, 85 (13) :2625-2627

[6] Local built-in potential on grain boundary of Cu(In,Ga)Se2 thin films [J].

Jiang, CS ;

Noufi, R ;

AbuShama, JA ;

Ramanathan, K ;

Moutinho, HR ;

Pankow, J ;

Al-Jassim, MM .

APPLIED PHYSICS LETTERS, 2004, 84 (18) :3477-3479

[7] Investigating the Role of Grain Boundaries in CZTS and CZTSSe Thin Film Solar Cells with Scanning Probe Microscopy [J].

Li, Joel B. ;

Chawla, Vardaan ;

Clemens, Bruce M. .

ADVANCED MATERIALS, 2012, 24 (06) :720-+

[8] Electronic and optical properties of Cu2ZnSnS4 and Cu2ZnSnSe4 [J].

Persson, Clas .

JOURNAL OF APPLIED PHYSICS, 2010, 107 (05)

[9] Investigation of local electronic transport and surface potential distribution of Cu(In,Ga)Se2 thin-films [J].

Shin, R. H. ;

Jeong, A. R. ;

Jo, W. .

CURRENT APPLIED PHYSICS, 2012, 12 (05) :1313-1318

[10] Beyond 11% Efficiency: Characteristics of State-of-the-Art Cu2ZnSn(S,Se)4 Solar Cells [J].

Todorov, Teodor K. ;

Tang, Jiang ;

Bag, Santanu ;

Gunawan, Oki ;

Gokmen, Tayfun ;

Zhu, Yu ;

Mitzi, David B. .

ADVANCED ENERGY MATERIALS, 2013, 3 (01) :34-38

← 1 →