Publication: Colloidal quantum dot ligand engineering for high performance solar cells
Issued Date
2016-04-01
Resource Type
ISSN
17545706
17545692
17545692
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2-s2.0-84964787449
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Mahidol University
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SCOPUS
Bibliographic Citation
Energy and Environmental Science. Vol.9, No.4 (2016), 1130-1143
Suggested Citation
Ruili Wang, Yuequn Shang, Pongsakorn Kanjanaboos, Wenjia Zhou, Zhijun Ning, Edward H. Sargent Colloidal quantum dot ligand engineering for high performance solar cells. Energy and Environmental Science. Vol.9, No.4 (2016), 1130-1143. doi:10.1039/c5ee03887a Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/43630
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Title
Colloidal quantum dot ligand engineering for high performance solar cells
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Abstract
© 2016 The Royal Society of Chemistry. Colloidal quantum dots (CQDs) are fast-improving materials for next-generation solution-processed optoelectronic devices such as solar cells, photocatalysis, light emitting diodes, and photodetectors. Nanoscale CQDs exhibit a high surface to volume ratio, and a significant fraction of atoms making up the quantum dots are thus located on the surface. CQD surface states therefore play a critical role in determining these materials' properties, influencing luminescence, defect energy levels, and doping type and density. In the past five years, halide ligands were applied to CQD solar cells, and these not only improved charge carrier mobility, but also reduced defects on the surface. With the inclusion of halide ligands, CQD solar cell certified power conversion efficiencies have increased rapidly from an initial 5% in 2010 to the latest certified values over 10%. In this perspective article, we summarize recent advances in ligand engineering that improve the performance of CQD solar cells, focusing on the use of halide inorganic ligands to improve CQD surface passivation and film conductivity simultaneously.