Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films

Semiconductors are ubiquitous gain media for coherent light sources. Solution-processed three-dimensional (3D) halide perovskites (e.g., CH3NH3PbI3) with their outstanding room temperature optical gain properties are the latest members of this family. Their two-dimensional (2D) layered perovskite co...

Full description

Saved in:
Bibliographic Details
Main Authors: Chong, Wee Kiang, Thirumal, Krishnamoorthy, Giovanni, David, Goh, Teck Wee, Liu, Xinfeng, Mathews, Nripan, Mhaisalkar, Subodh, Sum, Tze Chien
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2016
Subjects:
Online Access:https://hdl.handle.net/10356/81446
http://hdl.handle.net/10220/40797
https://doi.org/10.21979/N9/WJSVVC
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-81446
record_format dspace
spelling sg-ntu-dr.10356-814462022-07-12T03:02:19Z Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films Chong, Wee Kiang Thirumal, Krishnamoorthy Giovanni, David Goh, Teck Wee Liu, Xinfeng Mathews, Nripan Mhaisalkar, Subodh Sum, Tze Chien School of Materials Science & Engineering School of Physical and Mathematical Sciences Interdisciplinary Graduate School (IGS) Research Techno Plaza Energy Research Institute @ NTU (ERI@N) Photoluminescence spectroscopy Lasing Amplified spontaneous emission Two dimensional Perovskite Semiconductors are ubiquitous gain media for coherent light sources. Solution-processed three-dimensional (3D) halide perovskites (e.g., CH3NH3PbI3) with their outstanding room temperature optical gain properties are the latest members of this family. Their two-dimensional (2D) layered perovskite counterparts with natural multiple quantum well structures exhibit strong light–matter interactions and intense excitonic luminescence. However, despite such promising traits, there have been no reports on room temperature optical gain in 2D layered perovskites. Herein, we reveal the challenges towards achieving amplified spontaneous emission (ASE) in the archetypal (C6H5C2H4NH3)2PbI4 (or PEPI) system. Temperature-dependent transient spectroscopy uncovers the dominant free exciton trapping and bound biexciton formation pathways that compete effectively with biexcitonic gain. Phenomenological rate equation modeling predicts a large biexciton ASE threshold of ∼1.4 mJ cm−2, which is beyond the damage threshold of these materials. Importantly, these findings would rationalize the difficulties in achieving optical gain in 2D perovskites and provide new insights and suggestions for overcoming these challenges. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) Published version 2016-06-27T05:03:18Z 2019-12-06T14:31:09Z 2016-06-27T05:03:18Z 2019-12-06T14:31:09Z 2016 2016 Journal Article Chong, W. K., Thirumal, K., Giovanni, D., Goh, T. W., Liu, X., Mathews, N., . . . Sum, T. C. (2016). Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films. Physical Chemistry Chemical Physics, 21(18), 14701-14708. doi: 10.1039/C6CP01955B 1463-9076 https://hdl.handle.net/10356/81446 http://hdl.handle.net/10220/40797 10.1039/C6CP01955B 194876 en Physical Chemistry Chemical Physics https://doi.org/10.21979/N9/WJSVVC © 2016 The Author(s) (Royal Society of Chemistry). This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. 8 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Photoluminescence spectroscopy
Lasing
Amplified spontaneous emission
Two dimensional
Perovskite
spellingShingle Photoluminescence spectroscopy
Lasing
Amplified spontaneous emission
Two dimensional
Perovskite
Chong, Wee Kiang
Thirumal, Krishnamoorthy
Giovanni, David
Goh, Teck Wee
Liu, Xinfeng
Mathews, Nripan
Mhaisalkar, Subodh
Sum, Tze Chien
Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films
description Semiconductors are ubiquitous gain media for coherent light sources. Solution-processed three-dimensional (3D) halide perovskites (e.g., CH3NH3PbI3) with their outstanding room temperature optical gain properties are the latest members of this family. Their two-dimensional (2D) layered perovskite counterparts with natural multiple quantum well structures exhibit strong light–matter interactions and intense excitonic luminescence. However, despite such promising traits, there have been no reports on room temperature optical gain in 2D layered perovskites. Herein, we reveal the challenges towards achieving amplified spontaneous emission (ASE) in the archetypal (C6H5C2H4NH3)2PbI4 (or PEPI) system. Temperature-dependent transient spectroscopy uncovers the dominant free exciton trapping and bound biexciton formation pathways that compete effectively with biexcitonic gain. Phenomenological rate equation modeling predicts a large biexciton ASE threshold of ∼1.4 mJ cm−2, which is beyond the damage threshold of these materials. Importantly, these findings would rationalize the difficulties in achieving optical gain in 2D perovskites and provide new insights and suggestions for overcoming these challenges.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Chong, Wee Kiang
Thirumal, Krishnamoorthy
Giovanni, David
Goh, Teck Wee
Liu, Xinfeng
Mathews, Nripan
Mhaisalkar, Subodh
Sum, Tze Chien
format Article
author Chong, Wee Kiang
Thirumal, Krishnamoorthy
Giovanni, David
Goh, Teck Wee
Liu, Xinfeng
Mathews, Nripan
Mhaisalkar, Subodh
Sum, Tze Chien
author_sort Chong, Wee Kiang
title Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films
title_short Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films
title_full Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films
title_fullStr Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films
title_full_unstemmed Dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films
title_sort dominant factors limiting the optical gain in layered two-dimensional halide perovskite thin films
publishDate 2016
url https://hdl.handle.net/10356/81446
http://hdl.handle.net/10220/40797
https://doi.org/10.21979/N9/WJSVVC
_version_ 1738844819897188352