DataVXACS Applied Energy MaterialsPaper
journal article·2020-01-27Open access

Real-Time Electron Nanoscopy of Photovoltaic Absorber Formation from Kesterite Nanoparticles

Yongtao Qu, See Wee Chee, Martial Duchamp, Stephen Campbell, Guillaume Zoppi, Vincent Barrioz, Yvelin Giret, Thomas J. Penfold, Apoorva Chaturvedi, Utkur Mirsaidov, Neil S. Beattie

ACS Applied Energy Materials· Volume 3· Issue 1
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Source abstract

Abstract

Cu2ZnSnS4 nanocrystals are annealed in a Se-rich atmosphere inside a transmission electron microscope. During the heating phase, a complete S–Se exchange reaction occurs while the cation sublattice and morphology of the nanocrystals are preserved. At the annealing temperature, growth of large Cu2ZnSnSe4 grains with increased cation ordering is observed in real-time. This yields an annealing protocol which is transferred to an industrially similar solar cell fabrication process resulting in a 33% increase in the device open circuit voltage. The approach can be applied to improve the performance of any photovoltaic technology that requires annealing because of the criticality of the process step.
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Research context

NanomaterialsElectronic materialsMaterials processing

OpenAlex topics: Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne NE1 8ST, United Kingdom

Department of Physics, National University of Singapore, 117551, Singapore

Centre for BioImaging Sciences, Department of Biological Sciences, National University of Singapore, 117557, Singapore

Laboratory for In Situ and Operando Electron Nanoscopy, School of Materials Science and Engineering, Nanyang Technological University, 637371, Singapore

Chemistry—School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom

Funding

Engineering and Physical Sciences Research Council · National Research Foundation Singapore · Nanyang Technological University

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