Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/164909
Title: Antisolvent choice determines the domain distribution of quasi-2D perovskite for blue-emitting perovskites-based light emitting devices
Authors: Yantara, Natalia
Kanwat, Anil
Furuhashi, Tomoki
Chua, Huei Min
Sum, Tze Chien
Mathews, Nripan
Keywords: Science::Physics::Optics and light
Issue Date: 2023
Source: Yantara, N., Kanwat, A., Furuhashi, T., Chua, H. M., Sum, T. C. & Mathews, N. (2023). Antisolvent choice determines the domain distribution of quasi-2D perovskite for blue-emitting perovskites-based light emitting devices. Advanced Optical Materials, 11(4), 2202029-. https://dx.doi.org/10.1002/adom.202202029
Project: MOE2019-T2-2-097 
MOE2019-T2-1-006 
MOE-T2EP50120-0004
NRF-CRP25-2020-0004
Journal: Advanced Optical Materials
Abstract: Antisolvent treatment is paramount in the fabrication of high-efficiency perovskite optoelectronic devices as it affords a high crystallization rate critical for the formation of pin holes-free perovskite films. Although the antisolvent choice determines the domain distribution of quasi-2D perovskite, and hence the emission wavelength (blue vs green), as well as its light emission efficiency, few studies have examined it in detail. Herein, the crystallization dynamics and resulting optoelectronic properties of PBA (phenyl-butyl-ammonium)-based quasi-2D perovskites (A′2Am-1PbmX3m+1), which are commonly employed to create blue emissive films, are scrutinized for the first time through in situ photoluminescence measurements during film formation. The m domain distribution can be tailored by selecting antisolvents with various solubilities of PBA cation. Antisolvents with higher PBA solubility promote the formation of smaller bandgap films due to larger m domains and vice versa. This study effectively reveals a route to tailor quasi-2D perovskite optoelectronic properties via antisolvent engineering. Fine-tuning the optoelectronic properties can be done by blending two antisolvents with contrasting PBA cations solubility. By doing so, a blue emissive light emitting diode with emission wavelength ranging from 471 to 509 nm can be fabricated with an external quantum efficiency of 2.9% at 471 nm.
URI: https://hdl.handle.net/10356/164909
ISSN: 2195-1071
DOI: 10.1002/adom.202202029
DOI (Related Dataset): 10.21979/N9/4OUSIK
Schools: School of Materials Science and Engineering 
School of Physical and Mathematical Sciences 
Research Centres: Energy Research Institute @ NTU (ERI@N) 
Rights: © 2022 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:ERI@N Journal Articles
MSE Journal Articles
SPMS Journal Articles

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