Isotype Heterojunction Solar Cells Using n-Type Sb2Se3 Thin Films

被引：88

作者：

Hobson, Theodore D. C. ^{[1
]}

Phillips, Laurie J. ^{[1
]}

Hutter, Oliver S. ^{[1
]}

Shiel, Huw ^{[1
]}

Swallow, Jack E. N. ^{[1
]}

Savory, Christopher N. ^{[2
]}

Nayak, Pabitra K. ^{[3
,4
]}

Mariotti, Silvia ^{[1
]}

Das, Bhaskar ^{[5
]}

Bowen, Leon ^{[6
]}

Jones, Leanne A. H. ^{[1
]}

Featherstone, Thomas J. ^{[1
]}

Smiles, Matthew J. ^{[1
]}

Farnworth, Mark A. ^{[7
]}

Zoppi, Guillaume ^{[8
]}

Thakur, Pardeep K. ^{[9
]}

Lee, Tien-Lin ^{[9
]}

Snaith, Henry J. ^{[3
,4
]}

Leighton, Chris ^{[5
]}

Scanlon, David O. ^{[2
]}

Dhanak, Vinod R. ^{[1
]}

Durose, Ken ^{[1
]}

Veal, Tim D. ^{[1
]}

Major, Jonathan D. ^{[1
]}

机构：

[1] Univ Liverpool, Stephenson Inst Renewable Energy, Dept Phys, Liverpool L69 7ZF, Merseyside, England

[2] UCL, Kathleen Lonsdale Mat Chem & Thomas Young Ctr, Dept Chem, London WC1H 0AJ, England

[3] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[4] Tata Inst Fundamental Res, TIFR Ctr Interdisciplinary Sci, Hyderabad 500107, India

[5] Univ Minnesota, Dept Chem Engn & Mat Sci, 421 Washington Ave SE, Minneapolis, MN 55455 USA

[6] Univ Durham, Dept Phys, GJ Russell Microscopy Facil, Durham DH1 3LE, England

[7] NSG Pilkington, St Helens L40 5UF, Lancs, England

[8] Northumbria Univ, Dept Math Phys & Elect Engn, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

[9] Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England

来源：

CHEMISTRY OF MATERIALS | 2020年 / 32卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

INITIO MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; EFFICIENCY; CONTACT; GROWTH;

D O I：

10.1021/acs.chemmater.0c00223

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The carrier-type of the emerging photovoltaic Sb2Se3 was evaluated for both thin films and bulk crystals via a range of complementary techniques. X-ray photoelectron spectroscopy (XPS), hot probe, Hall effect, and surface photovoltage spectroscopy showed films and crystals synthesized from the Sb2Se3 granulate material to be n-type with chlorine identified as an unintentional n-type dopant via secondary ion mass spectrometry analysis. The validity of chlorine as a dopant was confirmed by the synthesis of intrinsic crystals from metallic precursors and subsequent deliberate n-type doping by the addition of MgCl2. Chlorine was also shown to be a substitutional n-type shallow dopant by density functional theory calculations. TiO2/Sb2Se3 n-n isotype heterojunction solar cells with 7.3% efficiency are subsequently demonstrated, with band alignment analyzed via XPS.

引用

页码：2621 / 2630

页数：10

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