Prospects of potential ZnMgO front layer in CZTS solar cells

被引：16

作者：

Bahfir, A. ^{[1
,2
]}

Boumaour, M. ^{[2
]}

Kechouane, M. ^{[1
]}

机构：

[1] Sci & Technol Houari Boumediene Univ, USTHB, Algiers, Algeria

[2] Res Ctr Semicond Technol Energet, Div Semicond Convers Devices CRTSE, Algiers, Algeria

来源：

OPTIK | 2018年 / 169卷

关键词：

CZTS solar cells; Zn1-xMgxO; Conduction band offset; Numerical simulation; CONDUCTION-BAND OFFSET; SIMULATION; EFFICIENCY; CU2ZNSNS4;

D O I：

10.1016/j.ijleo.2018.05.068

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In the CZTS structure, ZnMgO alloy can be a promising alternative buffer layer candidate to toxic cadmium sulphide (CdS) material. The effects of conduction band offset (CBO) at ZnMgO/CZTS interface are investigated by numerical approach. The main factor examined is the Mg concentration of ZnMgO and at high values of this parameter, a significantly higher barrier is observed, leading to a distortion in the current-voltage curve (S-shape). This phenomenon caused by degraded open circuit voltage (V-oc) and fill factor (FF) parameters leads to overall poor performance. Zn1-xMgxO with 20% Mg concentration decreases maximally the CBO and eliminates the S-shape while increasing the conversion efficiency. The suggested design by ultimately replacing both CdS buffer and ZnO window layers by a single layer of ZnMgO leads to an optimised CZTS based solar cell exhibiting a conversion efficiency of 11.50% with Voc = 0.78 V, Jsc = 22.37 mA/cm(2) and FF = 66.11%.

引用

页码：196 / 202

页数：7

共 21 条

[1] Alternative back contacts in kesterite Cu2ZnSn(S1-xSex)4 thin film solar cells [J].

Altamura, G. ;

Grenet, L. ;

Roger, C. ;

Roux, F. ;

Reita, V. ;

Fillon, R. ;

Fournier, H. ;

Perraud, S. ;

Mariette, H. .

JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY, 2014, 6 (01)

[2] Simulation and optimization of CdS-n/Cu2ZnSnS4 structure for solar cell applications [J].

Arbouz, H. ;

Aissat, A. ;

Vilcot, J. P. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2017, 42 (13) :8827-8832

[3] Advanced electrical simulation of thin film solar cells [J].

Burgelman, Marc ;

Decock, Koen ;

Khelifi, Samira ;

Abass, Aimi .

THIN SOLID FILMS, 2013, 535 :296-301

[4] Towards a CdS/Cu2ZnSnS4 solar cell efficiency improvement: A theoretical approach [J].

Courel, Maykel ;

Andrade-Arvizu, J. A. ;

Vigil-Galan, O. .

APPLIED PHYSICS LETTERS, 2014, 105 (23)

[5] Characterization of a CZTS thin film solar cell grown by sputtering method [J].

Dhakal, Tara P. ;

Peng, Chien-Yi ;

Tobias, R. Reid ;

Dasharathy, Ramesh ;

Westgate, Charles R. .

SOLAR ENERGY, 2014, 100 :23-30

[6] Analysis of photovoltaic properties of Cu2ZnSn(S,Se)4-based solar cells [J].

Grenet, Louis ;

Fillon, Raphael ;

Altamura, Giovanni ;

Fournier, Helene ;

Emieux, Fabrice ;

Faucherand, Pascal ;

Perraud, Simon .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2014, 126 :135-142

[7] Buffer layers in Cu(In,Ga)Se2 solar cells and modules [J].

Hariskos, D ;

Spiering, S ;

Powalla, M .

THIN SOLID FILMS, 2005, 480 :99-109

[8] Prediction of high efficiency ZnMgO/Si solar cells suppressing carrier recombination by conduction band engineering [J].

Knutsen, K. E. ;

Schifano, R. ;

Marstein, E. S. ;

Svensson, B. G. ;

Kuznetsov, A. Yu .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2013, 210 (03) :585-588

[9] Analysis of Cu2ZnSnS4/CdS based photovoltaic cell: A numerical simulation approach [J].

Meher, S. R. ;

Balakrishnan, L. ;

Alex, Z. C. .

SUPERLATTICES AND MICROSTRUCTURES, 2016, 100 :703-722

[10] Control of conduction band offset in wide-gap Cu(In,Ga)Se2 solar cells [J].

Minemoto, T ;

Hashimoto, Y ;

Shams-Kolahi, W ;

Satoh, T ;

Negami, T ;

Takakura, H ;

Hamakawa, Y .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2003, 75 (1-2) :121-126

← 1 2 3 →