Cited 24 time in webofscience Cited 25 time in scopus

Hydrophobic stabilizer-anchored fully inorganic perovskite quantum dots enhance moisture resistance and photovoltaic performance

Title
Hydrophobic stabilizer-anchored fully inorganic perovskite quantum dots enhance moisture resistance and photovoltaic performance
Authors
Kim, JigeonCho, SinyoungDinic, FilipChoi, JongminChoi, ChangsoonJeong, Soon MoonLee, Jong-SooVoznyy, OleksandrKo, Min JaeKim, Younghoon
DGIST Authors
Choi, Jongmin; Choi, Changsoon; Jeong, Soon MoonLee, Jong-SooKim, Younghoon
Issue Date
2020-09
Citation
Nano Energy, 75, 104985
Type
Article
Article Type
Article
Author Keywords
CsPbI3 perovskite quantum dotsPhenethylammoniumMoisture stabilitySolar cellsElectroluminescence
Keywords
SOLAR-CELLSHALIDE PEROVSKITESHIGH-EFFICIENCYPHASENANOCRYSTALSDYNAMICSCSPBX3TINBR
ISSN
2211-2855
Abstract
Advances in surface chemistry and manipulation of fully inorganic CsPbI3 perovskite quantum dots (CsPbI3-QDs) have enabled improving the charge transport and photovoltaic performance of CsPbI3-QD thin films by replacing their native long-chain, insulating ligands with short-chain ligands. However, the conventional approach based on formamidinium (FA) replacement removes the hydrophobic protective layer, opening the path for moisture penetration and resulting in poor device stability. We demonstrate that short-chain and hydrophobic phenethylammonium (PEA) cations, instead of FA, are efficiently incorporated only onto CsPbI3-QD surfaces, confirmed by Fourier-transform infrared, H nuclear magnetic resonance and density functional theory calculations. PEA incorporation leads simultaneously to improved photovoltaic performance and moisture stability of resultant CsPbI3-QDs without any change in size, fully inorganic composition, and dimensionality of CsPbI3-QDs. Therefore, PEA-incorporated CsPbI3-QD solar cells show a high device power conversion efficiency of 14.1% and high moisture stability, retaining over 90% of the initial performance after 15 days under ambient conditions. © 2020 Elsevier Ltd
URI
http://hdl.handle.net/20.500.11750/12672
DOI
10.1016/j.nanoen.2020.104985
Publisher
Elsevier BV
Related Researcher
  • Author Choi, Jongmin Chemical & Energy Materials Engineering (CEME) Laboratory
  • Research Interests Advanced Metal Oxides; Colloidal Quantum Dots; Perovskite-Quantum Dot Hybrid Nanomaterials; Photocatalytic Materials
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringChemical & Energy Materials Engineering (CEME) Laboratory1. Journal Articles
Division of Energy Technology1. Journal Articles
Department of Energy Science and EngineeringMNEDL(Multifunctional Nanomaterials & Energy Devices Lab)1. Journal Articles


qrcode mendeley

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

BROWSE