Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/140859
Title: Enhanced coverage of all-inorganic perovskite CsPbBr3 through sequential deposition for green light-emitting diodes
Authors: Ng, Yan Fong
Neo, Wei Jian
Nur Fadilah Jamaludin
Yantara, Natalia
Mhaisalkar, Subodh
Mathews, Nripan
Keywords: Engineering::Materials
Issue Date: 2017
Source: Ng, Y. F., Neo, W. J., Nur Fadilah Jamaludin, Yantara, N., Mhaisalkar, S., & Mathews, N. (2017). Enhanced coverage of all-inorganic perovskite CsPbBr3 through sequential deposition for green light-emitting diodes. Energy Technology, 5(10), 1859-1865. doi:10.1002/ente.201700475
Journal: Energy Technology
Abstract: Film morphology has a major influence on the performance of halide perovskite semiconductors, where poor coverage and pinholes are generally detrimental and result in undesirable current leakage. All‐inorganic cesium lead bromide (CsPbBr3) has an advantage of improved stability especially under device operation, but the low solubility of the ionic precursor CsBr limits the coverage of the solution‐processed film. To tackle this, a sequential deposition technique is proposed whereby PbBr2 is first deposited on a planar substrate prior to exposure to a CsBr solution to initiate conversion to the desired CsPbBr3 phase. This approach essentially nullifies the solubility problem of CsBr and the final perovskite film coverage now chiefly depends on the initial PbBr2 concentration and the duration of exposure to the CsBr solution. With over 90 % film coverage achieved, a proof of concept perovskite light‐emitting diode (PeLED) with green emission at 527 nm has also been achieved, thereby demonstrating the feasibility of this methodology for future device fabrication.
URI: https://hdl.handle.net/10356/140859
ISSN: 2194-4288
DOI: 10.1002/ente.201700475
Schools: School of Materials Science and Engineering 
Interdisciplinary Graduate School (IGS) 
Research Centres: Energy Research Institute @ NTU (ERI@N) 
Rights: This is the accepted version of the following article: Ng, Y. F., Neo, W. J., Nur Fadilah Jamaludin, Yantara, N., Mhaisalkar, S., & Mathews, N. (2017). Enhanced coverage of all-inorganic perovskite CsPbBr3 through sequential deposition for green light-emitting diodes. Energy Technology, 5(10), 1859-1865, which has been published in final form at dx.doi.org/10.1002/ente.201700475. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html]."
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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