Cited 0 time in webofscience Cited 5 time in scopus

Controlled Size Growth of Thermally Stable Organometallic Halide Perovskite Microrods: Synergistic Effect of Dual-Doping, Lattice Strain Engineering, Antisolvent Crystallization, and Band Gap Tuning Properties

Title
Controlled Size Growth of Thermally Stable Organometallic Halide Perovskite Microrods: Synergistic Effect of Dual-Doping, Lattice Strain Engineering, Antisolvent Crystallization, and Band Gap Tuning Properties
Authors
Nazim, MohammedKim, Jae Hyun
DGIST Authors
Kim, Jae Hyun
Issue Date
2020-07
Citation
ACS Omega, 5(26), 16106-16119
Type
Article
Article Type
Article
Keywords
PHASEFILMSABSORPTIONSTABILITYSOLAR-CELLSURBACH ENERGYANTI-SOLVENTNANOCRYSTALSPERFORMANCEEMISSION
ISSN
2470-1343
Abstract
Organometallic halide perovskites, as the light-harvesting material, have been extensively used for cost-effective energy production in high-performance perovskite solar cells, despite their poor stability in the ambient atmosphere. In this work, methylammonium lead iodide, CH3NH3PbI3, perovskite was successfully doped with KMnO4 using antisolvent crystallization to develop micrometer-length perovskite microrods. Thus, the obtained KMnO4-doped perovskite microrods have exhibited sharp, narrow, and red-shifted photoluminescence band, as well as high lattice strain with improved thermal stability compared to undoped CH3NH3PbI3. During the synthesis of the KMnO4-doped perovskite microrods, a low boiling point solvent, anhydrous chloroform, was employed as an antisolvent to facilitate the emergence of controlled-size perovskite microrods. The as-synthesized KMnO4-doped perovskite microrods retained the pristine perovskite crystalline phases and lowered energy band gap (similar to 1.57 eV) because of improved light absorption and narrow fluorescence emission bands (fwhm < 10 nm) with improved lattice strain (similar to 4.42 x 10(-5)), Goldsmith tolerance factor (similar to 0.89), and high dislocation density (similar to 5.82 x 10(-4)), as estimated by Williamson-Hall plots. Thus, the obtained results might enhance the optical properties with reduced energy band gap and high thermal stability of doped-perovskite nanomaterials in ambient air for diverse optoelectronic applications. This study paves the way for new insights into chemical doping and interaction possibilities in methylamine-based perovskite materials with various metal dopants for further applications.
URI
http://hdl.handle.net/20.500.11750/12781
DOI
10.1021/acsomega.0c01667
Publisher
American Chemical Society
Related Researcher
  • Author Kim, Jae Hyun  
  • Research Interests 에너지, 배터리, 고체전해질, 태양전지, 전기차, 리튬이온배터리
Files:
There are no files associated with this item.
Collection:
Division of Energy Technology1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE