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Isotype heterojunction solar cells using n-type Sb2Se3 thin films

DOI: 10.1021/acs.chemmater.0c00223 DOI Help

Authors: Theodore D. C. Hobson (University of Liverpool) , Laurie J Phillips (University of Liverpool) , Oliver S Hutter (University of Liverpool) , Huw Shiel (University of Liverpool) , Jack E. N. Swallow (University of Liverpool) , Christopher N. Savory (University College London) , Pabitra K Nayak (University of Oxford; Tata Institute of Fundamental Research) , Silvia Mariotti (University of Liverpool; UniversitØ de Bordeaux) , Bhaskar Das (University of Minnesota) , Leon Bowen (University of Durham) , Leanne A. H. Jones (University of Liverpool) , Thomas J. Featherstone (University of Liverpool) , Matthew J. Smiles (University of Liverpool) , Mark A Farnworth (NSG Technical Centre) , Guillaume Zoppi (Northumbria University) , Pardeep K. Thakur (Diamond Light Source) , Tien-lin Lee (Diamond Light Source) , Henry J. Snaith (University of Oxford) , Chris Leighton (University of Minnesota) , David O. Scanlon (University College London; Diamond Light Source) , Vinod R. Dhanak (University of Liverpool) , Ken Durose (University of Liverpool) , Tim D. Veal (University of Liverpool) , Jonathan D Major (University of Liverpool)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chemistry Of Materials

State: Published (Approved)
Published: March 2020
Diamond Proposal Number(s): 21431

Open Access Open Access

Abstract: The carrier type of 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 photo-voltage spectroscopy showed material synthesized from Sb2Se3 granulate mate-rial 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 con-firmed by synthesis of intrinsic crystals from metallic precursors and subsequent 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 of 7.3% efficiency based are demonstrated with band alignment analyzed via XPS.

Subject Areas: Physics, Materials, Chemistry


Instruments: I09-Surface and Interface Structural Analysis

Documents:
acs.chemmater.0c00223.pdf