Hobson, TDC;
Phillips, LJ;
Hutter, OS;
Shiel, H;
Swallow, JEN;
Savory, CN;
Nayak, PK;
... Major, JD; + view all
(2020)
Isotype Heterojunction Solar Cells Using n-Type Sb₂Se₃ Thin Films.
Chemistry of Materials
, 32
(6)
pp. 2621-2630.
10.1021/acs.chemmater.0c00223.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Isotype Heterojunction Solar Cells Using n-Type Sb₂Se₃ Thin Films |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acs.chemmater.0c00223 |
| Publisher version: | https://doi.org/10.1021/acs.chemmater.0c00223 |
| Language: | English |
| Additional information: | This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
| Keywords: | Crystals, Oxides, Defects, Materials, X-ray photoelectron spectroscopy |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10094944 |
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