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Doped SnO2 nanoparticles for solar-cell application
Author(s): Tik Lun Leung; Fangzhou Liu; Ho Won Tam; Wei Chen; Alan Man Ching Ng; Aleksandra B. Djurišic; Wai-Kin Chan
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Paper Abstract

Since conventional TiO2 electron transporting layer (ETL) can accelerate the degradation of organic lead halide perovskite solar cells, alternative ETL is required for PSCs with extended lifetime. In this work, SnO2 nanoparticles, a potential ETL material, were synthesized via facile sol-gel method. Different dopants were introduced in an attempt to enhance conductivity and improve electronic properties of pristine SnO2. The prepared nanoparticles were identified to be rutile SnO2 phase with crystalline size less than 4 nm. The presence of the dopant in the doped samples was confirmed by energy dispersive X-ray spectroscopy, and it is also evident from the colour change of the doped samples compared to undoped one. While the dopant incorporation has been successful, nanoparticles exhibited pronounced aggregation in water dispersions, which prevented preparation of sufficiently smooth films for application in planar perovskite solar cells. Further optimization of the nanoparticle surfaces is needed to obtain dispersions suitable for spin-coating uniform thin films of doped SnO2.

Paper Details

Date Published: 1 March 2019
PDF: 6 pages
Proc. SPIE 10919, Oxide-based Materials and Devices X, 109192K (1 March 2019); doi: 10.1117/12.2509463
Show Author Affiliations
Tik Lun Leung, The Univ. of Hong Kong (Hong Kong, China)
Fangzhou Liu, The Univ. of Hong Kong (Hong Kong, China)
Ho Won Tam, The Univ. of Hong Kong (Hong Kong, China)
Wei Chen, The Univ. of Hong Kong (Hong Kong, China)
Alan Man Ching Ng, Southern Univ. of Science and Technology of China (China)
Aleksandra B. Djurišic, The Univ. of Hong Kong (Hong Kong, China)
Wai-Kin Chan, The Univ. of Hong Kong (Hong Kong, China)

Published in SPIE Proceedings Vol. 10919:
Oxide-based Materials and Devices X
David J. Rogers; David C. Look; Ferechteh H. Teherani, Editor(s)

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