Size effect of lead-free halide double perovskite on luminescence property

Peigeng Han; Xue Zhang; Xin Mao; Bin Yang; Songqiu Yang; Zhaochi Feng; Donghui Wei; Weiqiao Deng; Tõnu Pullerits; Keli Han

doi:10.1007/s11426-019-9520-1

Size effect of lead-free halide double perovskite on luminescence property

Peigeng Han, Xue Zhang, Xin Mao, Bin Yang, Songqiu Yang, Zhaochi Feng, Donghui Wei, Weiqiao Deng, Tõnu Pullerits, Keli Han

Research output: Contribution to journal › Article › peer-review

Abstract

Lead-free halide double perovskites have gathered wide scientific interest since they are environmentally friendly and stable. However, compared to the lead perovskites, their optoelectronic properties are compromised. Herein we report a series of bulk lead-free mixed Bi-In halide double perovskites: Cs₂AgBi_1−xIn_xCl₆ (0<x<1). The Cs₂AgBi_0.125In_0.875Cl₆ breaks the parity-forbidden transition and retains direct band gap structure, having warm-white light emission, with photoluminescence quantum efficiency (PLQE) of 70.3%, much higher than the PLQE of reported lead perovskite materials. Its exciton self-trapping dynamics is investigated. Meanwhile, the Cs₂AgBi_0.125In_0.875Cl₆ nanocrystals and Cs₂AgBi_0.125In_0.875Cl₆ microcrystals can be synthesized by modified hot injection and rapid cooling crystallization, respectively. The size effect of Cs₂AgBi_0.125In_0.875Cl₆ is studied on the photoluminescence (PL) property. Additionally, the bulk material exhibits excellent stability on exposure to light, humidity and air for more than 3 months. It is a promising candidate as highly efficient warm white-light emitting material for road lighting.

Original language	English
Pages (from-to)	1405-1413
Journal	Science China Chemistry
Volume	62
Issue number	10
Early online date	2019 Jul 19
DOIs	https://doi.org/10.1007/s11426-019-9520-1
Publication status	Published - 2019

Subject classification (UKÄ)

Other Chemistry Topics
Natural Sciences
Condensed Matter Physics (including Material Physics, Nano Physics)

Free keywords

bulk crystals
double perovskite
size effect
stability
warm white

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10.1007/s11426-019-9520-1

Cite this

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title = "Size effect of lead-free halide double perovskite on luminescence property",

abstract = "Lead-free halide double perovskites have gathered wide scientific interest since they are environmentally friendly and stable. However, compared to the lead perovskites, their optoelectronic properties are compromised. Herein we report a series of bulk lead-free mixed Bi-In halide double perovskites: Cs2AgBi1−xInxCl6 (02AgBi0.125In0.875Cl6 breaks the parity-forbidden transition and retains direct band gap structure, having warm-white light emission, with photoluminescence quantum efficiency (PLQE) of 70.3\%, much higher than the PLQE of reported lead perovskite materials. Its exciton self-trapping dynamics is investigated. Meanwhile, the Cs2AgBi0.125In0.875Cl6 nanocrystals and Cs2AgBi0.125In0.875Cl6 microcrystals can be synthesized by modified hot injection and rapid cooling crystallization, respectively. The size effect of Cs2AgBi0.125In0.875Cl6 is studied on the photoluminescence (PL) property. Additionally, the bulk material exhibits excellent stability on exposure to light, humidity and air for more than 3 months. It is a promising candidate as highly efficient warm white-light emitting material for road lighting.",

keywords = "bulk crystals, double perovskite, size effect, stability, warm white",

author = "Peigeng Han and Xue Zhang and Xin Mao and Bin Yang and Songqiu Yang and Zhaochi Feng and Donghui Wei and Weiqiao Deng and T{\~o}nu Pullerits and Keli Han",

year = "2019",

doi = "10.1007/s11426-019-9520-1",

language = "English",

volume = "62",

pages = "1405--1413",

journal = "Science China Chemistry",

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T1 - Size effect of lead-free halide double perovskite on luminescence property

AU - Han, Peigeng

AU - Zhang, Xue

AU - Mao, Xin

AU - Yang, Bin

AU - Yang, Songqiu

AU - Feng, Zhaochi

AU - Wei, Donghui

AU - Deng, Weiqiao

AU - Pullerits, Tõnu

AU - Han, Keli

PY - 2019

Y1 - 2019

N2 - Lead-free halide double perovskites have gathered wide scientific interest since they are environmentally friendly and stable. However, compared to the lead perovskites, their optoelectronic properties are compromised. Herein we report a series of bulk lead-free mixed Bi-In halide double perovskites: Cs2AgBi1−xInxCl6 (02AgBi0.125In0.875Cl6 breaks the parity-forbidden transition and retains direct band gap structure, having warm-white light emission, with photoluminescence quantum efficiency (PLQE) of 70.3%, much higher than the PLQE of reported lead perovskite materials. Its exciton self-trapping dynamics is investigated. Meanwhile, the Cs2AgBi0.125In0.875Cl6 nanocrystals and Cs2AgBi0.125In0.875Cl6 microcrystals can be synthesized by modified hot injection and rapid cooling crystallization, respectively. The size effect of Cs2AgBi0.125In0.875Cl6 is studied on the photoluminescence (PL) property. Additionally, the bulk material exhibits excellent stability on exposure to light, humidity and air for more than 3 months. It is a promising candidate as highly efficient warm white-light emitting material for road lighting.

AB - Lead-free halide double perovskites have gathered wide scientific interest since they are environmentally friendly and stable. However, compared to the lead perovskites, their optoelectronic properties are compromised. Herein we report a series of bulk lead-free mixed Bi-In halide double perovskites: Cs2AgBi1−xInxCl6 (02AgBi0.125In0.875Cl6 breaks the parity-forbidden transition and retains direct band gap structure, having warm-white light emission, with photoluminescence quantum efficiency (PLQE) of 70.3%, much higher than the PLQE of reported lead perovskite materials. Its exciton self-trapping dynamics is investigated. Meanwhile, the Cs2AgBi0.125In0.875Cl6 nanocrystals and Cs2AgBi0.125In0.875Cl6 microcrystals can be synthesized by modified hot injection and rapid cooling crystallization, respectively. The size effect of Cs2AgBi0.125In0.875Cl6 is studied on the photoluminescence (PL) property. Additionally, the bulk material exhibits excellent stability on exposure to light, humidity and air for more than 3 months. It is a promising candidate as highly efficient warm white-light emitting material for road lighting.

KW - bulk crystals

KW - double perovskite

KW - size effect

KW - stability

KW - warm white

UR - https://www.scopus.com/pages/publications/85069461285

U2 - 10.1007/s11426-019-9520-1

DO - 10.1007/s11426-019-9520-1

M3 - Article

AN - SCOPUS:85069461285

SN - 1674-7291

VL - 62

SP - 1405

EP - 1413

JO - Science China Chemistry

JF - Science China Chemistry

IS - 10

ER -

Size effect of lead-free halide double perovskite on luminescence property

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Size effect of lead-free halide double perovskite on luminescence property

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Subject classification (UKÄ)

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