Preparation of multiband structure with Cu2Se/Ga3Se2/In3Se2 thin films by thermal evaporation technique for maximal solar spectrum utilization

被引：6

作者：

Mohan, A. ^{[1
]}

Rajesh, S. ^{[2
]}

Gopalakrishnan, M. ^{[3
]}

机构：

[1] Karunya Univ, Dept Phys, Thin Film Lab, Coimbatore 641114, Tamil Nadu, India

[2] Karunya Univ, Dept Nanosci & Technol, Coimbatore 641114, Tamil Nadu, India

[3] Vivekanandha Coll Arts & Sci Women, Dept Phys, Tiruchengode 637205, India

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2016年 / 98卷

关键词：

Multiband; Stacking; Composites; Annealing; Full solar spectrum utilization; EFFICIENCY; CELLS; LIMIT;

D O I：

10.1016/j.spmi.2016.08.006

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The paper investigates and discusses the formation of multiband structure through the Cu2Se-Ga3Se-In3Se2 thin films for maximal solar spectrum utilization. Stacking different semiconductor materials with various band gaps were done by successive evaporation method. Based on the band gap values the layers are arranged (low to high bandgap from the substrate). The XRD results exhibits the formation of CIGS composites through this successive evaporation of Cu2Se/Ga3Se/In3Se2 and treating then with temperature. Scanning Electron Microscope images shows improved crystallinity with the reduction in the larger grain boundary scattering after annealing. Optical spectra shows the stronger absorption in an UV Visible region and higher transmission in the infrared and near infrared region. The optical band gap values calculated for as prepared films is 2.20 eV and the band gap was split into 1.62, 1.92 eV and 2.27eV for annealed samples. This multiband structures are much needed to utilize the full solar spectrum. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：46 / 53

页数：8

共 23 条

[1] Structural, electrical and optical properties of copper selenide thin films deposited by chemical bath deposition technique [J].

Al-Mamun ;

Islam, ABMO ;

Bhuiyan, AH .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2005, 16 (05) :263-268

[2] The optical and structural properties of polycrystalline Cu(In,Ga)(Se,S)2 absorber thin films [J].

Dejene, F. B. .

JOURNAL OF MATERIALS SCIENCE, 2011, 46 (21) :6981-6987

[3] ON THE THERMODYNAMIC LIMIT OF PHOTO-VOLTAIC ENERGY-CONVERSION [J].

DEVOS, A ;

PAUWELS, H .

APPLIED PHYSICS, 1981, 25 (02) :119-125

[4] 40.8% efficient inverted triple-junction solar cell with two independently metamorphic junctions [J].

Geisz, J. F. ;

Friedman, D. J. ;

Ward, J. S. ;

Duda, A. ;

Olavarria, W. J. ;

Moriarty, T. E. ;

Kiehl, J. T. ;

Romero, M. J. ;

Norman, A. G. ;

Jones, K. M. .

APPLIED PHYSICS LETTERS, 2008, 93 (12)

[5] Multiple band and impurity photovoltaic solar cells: General theory and comparison to tandem cells [J].

Green, MA .

PROGRESS IN PHOTOVOLTAICS, 2001, 9 (02) :137-144

[6] Potential for low dimensional structures in photovoltaics [J].

Green, MA .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2000, 74 (1-3) :118-124

[7]

Guinier A., 1963, SERIES BOOK PHYS

[8] Current-matched triple-junction solar cell reaching 41.1% conversion efficiency under concentrated sunlight [J].

Guter, Wolfgang ;

Schoene, Jan ;

Philipps, Simon P. ;

Steiner, Marc ;

Siefer, Gerald ;

Wekkeli, Alexander ;

Welser, Elke ;

Oliva, Eduard ;

Bett, Andreas W. ;

Dimroth, Frank .

APPLIED PHYSICS LETTERS, 2009, 94 (22)

[9] Post-annealing effect on the reactively sputter-grown CIGS thin films and its influence to solar cell performance [J].

Kim, Jeha ;

Lee, Ho-Sub ;

Park, Nae-Man .

CURRENT APPLIED PHYSICS, 2014, 14 :S63-S68

[10] Improvement of Cu(In,Ga)Se2 thin film solar cells by surface sulfurization using ditertiarybutylsulfide [J].

Liu, Xiaohui ;

Liu, Zhengxin ;

Meng, Fanying ;

Sugiyama, Mutsumi .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2014, 124 :227-231

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