Enabling Tailorable Optical Properties and Markedly Enhanced Stability of Perovskite Quantum Dots by Permanently Ligating with Polymer Hairs

Yoon, Young Jun; Chang, Yajing; Zhang, Shuguang; Zhang, Meng; Pan, Shuang; He, Yanjie; Lin, Chun Hao; Yu, Shengtao; Chen, Yihuang; Wang, Zewei; Ding, Yong; Jung, Jaehan; Thadhani, Naresh; Tsukruk, Vladimir V.; Kang, Zhitao; Lin, Zhiqun

doi:10.1002/adma.201901602

Title: Enabling Tailorable Optical Properties and Markedly Enhanced Stability of Perovskite Quantum Dots by Permanently Ligating with Polymer Hairs

Journal Article · Thu Jun 13 00:00:00 EDT 2019 · Advanced Materials

DOI:https://doi.org/10.1002/adma.201901602· OSTI ID:1526081

Yoon, Young Jun ^[1]; Chang, Yajing ^[1]; Zhang, Shuguang ^[1]; Zhang, Meng ^[1]; Pan, Shuang ^[1]; He, Yanjie ^[1]; Lin, Chun Hao ^[1]; Yu, Shengtao ^[1]; Chen, Yihuang ^[1]; Wang, Zewei ^[1]; Ding, Yong ^[1]; Jung, Jaehan ^[1]; Thadhani, Naresh ^[1]; Tsukruk, Vladimir V. ^[1]; Kang, Zhitao ^[2];

^[1]

School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332 USA
Georgia Tech Research Institute Georgia Institute of Technology Atlanta GA 30332 USA

Abstract Instability of perovskite quantum dots (QDs) toward humidity remains one of the major obstacles for their long‐term use in optoelectronic devices. Herein, a general amphiphilic star‐like block copolymer nanoreactor strategy for in situ crafting a set of hairy perovskite QDs with precisely tunable size and exceptionally high water and colloidal stabilities is presented. The selective partition of precursors within the compartment occupied by inner hydrophilic blocks of star‐like diblock copolymers imparts in situ formation of robust hairy perovskite QDs permanently ligated by outer hydrophobic blocks via coprecipitation in nonpolar solvent. These size‐ and composition‐tunable perovskite QDs reveal impressive water and colloidal stabilities as the surface of QDs is intimately and permanently ligated by a layer of outer hydrophobic polymer hairs. More intriguingly, the readily alterable length of outer hydrophobic polymers renders the remarkable control over the stability enhancement of hairy perovskite QDs.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: DE‐FG02‐09ER46604

OSTI ID:: 1526081

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Vol. 31 Journal Issue: 32; ISSN 0935-9648

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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Cited by: 96 works

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