Potassium-assisted Enhancement of Fluorescence Stability of CsPbBr<sub>3</sub> Perovskite Quantum Dots and Their Application in QLEDs

Yue CHANG; Hai-peng ZHAO; Yun BAO; Fei-peng ZHANG

doi:10.3788/fgxb20204106.0691

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Potassium-assisted Enhancement of Fluorescence Stability of CsPbBr₃ Perovskite Quantum Dots and Their Application in QLEDs

Synthesis and Properties of Materials | 更新时间：2020-09-15

- Potassium-assisted Enhancement of Fluorescence Stability of CsPbBr₃ Perovskite Quantum Dots and Their Application in QLEDs
- Chinese Journal of Luminescence Vol. 41, Issue 6, Pages: 691-699(2020)
- 作者机构：
  
  1.河南城建学院材料与化工学院, 河南平顶山 467036
  2.河南城建学院数理学院, 河南平顶山 467036
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China
- DOI：10.3788/fgxb20204106.0691
  CLC： O482.31
- Received：18 March 2020，
  
  Accepted：12 April 2020，
  
  Published：2020-06
- 稿件说明：
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Yue CHANG, Hai-peng ZHAO, Yun BAO, et al. Potassium-assisted Enhancement of Fluorescence Stability of CsPbBr₃ Perovskite Quantum Dots and Their Application in QLEDs[J]. Chinese journal of luminescence, 2020, 41(6): 691-699.
DOI：

Yue CHANG, Hai-peng ZHAO, Yun BAO, et al. Potassium-assisted Enhancement of Fluorescence Stability of CsPbBr₃ Perovskite Quantum Dots and Their Application in QLEDs[J]. Chinese journal of luminescence, 2020, 41(6): 691-699. DOI： 10.3788/fgxb20204106.0691.

摘要

为了提高钙钛矿（CsPb

，

=Cl，Br，I）量子点的荧光稳定性，实现钙钛矿量子点在下一代平板显示与固态光源中的长期应用，研究了钾元素对量子点荧光性能的影响。首先，采用热注入法合成了CsPbBr

钙钛矿量子点。接着，用油酸钾与上述钙钛矿量子点进行反应，制备了钾元素修饰的钙钛矿量子点。最后，将这些钙钛矿量子点应用于发光二极管的发光层。实验结果表明，当油酸钾的含量为20 μL/mL时，钾元素修饰的量子点的荧光性能优于未修饰的量子点。相比于未修饰的量子点所制备的器件，钾元素修饰的量子点所制备器件的最大亮度从1 845 cd/m

增加到4 300 cd/m

，最大电流效率从0.3 cd/A增加到1.3 cd/A。因此钾元素的引入可以有效地抑制量子点表面缺陷的产生，减少荧光量子产率的损失，增强量子点的荧光稳定性，实现更优越的器件性能。

Abstract

In order to improve the fluorescence stability of perovskite quantum dots(PQDs) (CsPb

=Cl

I) and realize long-term application in the next generation of flat panel displays and solid-state lighting

the effect of potassium on the fluorescence performance of PQDs was studied. First

CsPbBr

PQDs were synthesized by hot injection method. Then

potassium oleate (KOA) was reacted with the above-objected PQDs to prepare K-modified PQDs(K-PQDs). Finally

these PQDs were applied to the emitting layer of the quantum light emitting diodes(QLEDs). The experimental results show that when the content of KOA is 20 μL/mL

the fluorescence performance of K-PQDs is better than unmodified PQDs. Compared with devices made with unmodified PQDs

the maximum luminance of devices made with K-PQDs increased from 1 845 to 4 300 cd/m

and the maximum current efficiency increased from 0.3 to 1.3 cd/A. Therefore

the introduction of potassium can effectively suppress the generation of surface defects of PQDs

reduce the loss of photoluminescence quantum yield(PLQYs)

enhance the fluorescence stability of PQDs

and achieve more excellent device performance.

关键词

Keywords

references

KOJIMA A, TESHIMA K, SHIRAI Y, et al .. Organometal halide perovskites as visible-light sensitizers for photovoltaic cells[J]. J. Am. Chem. Soc. , 2009, 131(17):6050-6051.

刘大超, 崔运超, 李光, 等.阳极界面修饰对钙钛矿太阳能电池性能的影响[J].光子学报, 2017, 46(2):0223003-1-8.

LIU D C, CUI Y C, LI G, et al.. Influence of anode interface modification on the performance of perovskite solar cells[J]. Acta Photon. Sinica , 2017, 46(2):0223003-1-8. (in Chinese)

王艳青, 李龙, 聂林辉, 等.两步沉积法制备Br或Cl掺杂的有机-无机杂化钙钛矿太阳电池[J].物理化学学报, 2016, 32(11):2724-2730.

WANG Y Q, LI L, NIE L H, et al .. Organic-inorganic hybrid perovskite solar cells processed with Br or Cl doping via a two-step deposition[J]. Acta Phys. Chim. Sinica , 2016, 32(11):2724-2730. (in Chinese)

LI X, ZHANG F, HE H Y, et al.. On-device lead sequestration for perovskite solar cells[J]. Nature , 2020, 578(7796):555-558.

PROTESESCU L, YAKUNIN S, BODNARCHUK M I, et al.. Nanocrystals of cesium lead halide perovskites (CsPb X 3 , X =Cl, Br, and I):novel optoelectronic materials showing bright emission with wide color gamut[J]. Nano Lett. , 2016, 15(6):3692-3696.

马雪, 庄仕伟, 韩丽锦, 等.合成及薄膜制备条件对CsPbBr 3 全无机钙钛矿量子点特性的影响[J].发光学报, 2019, 40(8):949-955.

MA X, ZHUANG S W, HAN L J, et al.. Effects of synthesis and film preparation conditions on properties of CsPbBr 3 inorganic perovskite quantum dots[J]. Chin. J. Lumin. , 2019, 40(8):949-955. (in Chinese)

LI J H, XU L M, WANG T, et al.. 50-fold EQE improvement up to 6.27% of solution-processed all-inorganic perovskite CsPbBr 3 QLEDs via surface ligand density control[J]. Adv. Mater. , 2017, 29(5):1603885.

余彬海, 卢汉光, 饶龙石, 等.微通道反应器合成高质量的无机钙钛矿量子点及其LED应用[J].发光学报, 2018, 39(4):440-448.

YU B H, LU H G, RAO L S, et al.. Synthesis of high quality inorganic perovskite quantum dots via microchannel reactor and their application in LED[J]. Chin. J. Lumin. , 2018, 39(4):440-448. (in Chinese)

SANEHIRA E M, MARSHALL A R, CHRISTIANS J A, et al.. Enhanced mobility CsPbI 3 quantum dot arrays for record-efficiency, high-voltage photovoltaic cells[J]. Sci. Adv. , 2017, 3(10):eaao4204.

郑加金, 王雅如, 余柯涵, 等.基于石墨烯-钙钛矿量子点场效应晶体管的光电探测器[J].物理学报, 2018, 67(11):118502-1-8.

ZHENG J J, WANG Y R, YU K H, et al.. Field effect transistor photodetector based on graphene and perovskite quantum dots[J]. Acta Phys. Sinica , 2018, 67(11):118502-1-8. (in Chinese)

陈肖慧, 季思航, 袁曦, 等. Mn掺杂CsPbCl 3 钙钛矿量子点的发光性质[J].发光学报, 2018, 39(5):609-614.

CHEN X H, JI S H, YUAN X, et al.. Photoluminescence properties of Mn doped CsPbCl 3 perovskite quantum dots[J]. Chin. J. Lumin. , 2018, 39(5):609-614. (in Chinese)

JIA C, LI H, TAN L F, et al.. Observation and implication of halide exchange beyond CsPb X 3 perovskite nanocrystals[J]. Nanoscale , 2019, 11(7):3123-3128.

JI Y Q, WANG M Q, YANG Z, et al.. Highly stable Na:CsPb(Br, I) 3 @Al 2 O 3 nanocomposites prepared by a pre-protection strategy[J]. Nanoscale , 2020, 12(11):6403-6410.

周江聪, 欧阳清海, 黄烽. SiO 2 复合CsPbI 3 量子点提高其相稳定性和抗湿性[J].人工晶体学报, 2018, 47(10):2190-2195.

ZHOU J C, OUYANG Q H, HUANG F. SiO 2 composited CsPbI 3 quantum dots for improving its phase stability and moisture resistance[J]. J. Synth. Crys. , 2018, 47(10):2190-2195. (in Chinese)

CHEN P, LIU Y F, ZHANG Z J, et al .. In situ growth of ultrasmall cesium lead bromine quantum dots in a mesoporous silica matrix and their application in flexible light-emitting diodes[J]. Nanoscale , 2019, 11(35):16499-16507.

PAN J, SHANG Y Q, YIN J, et al.. Bidentate ligand-passivated CsPbI 3 perovskite nanocrystals for stable near-unity photoluminescence quantum yield and efficient red light-emitting diodes[J]. J. Am. Chem. Soc. , 2018, 140(2):562-565.

SALIBA M, MATSUI T, DOMANSKI K, et al.. Incorporation of rubidium cations into perovskite solar cells improves photovoltaic performance[J]. Science , 2016, 354(6309):206-209.

NAM J K, CHAI S U, CHA W, et al.. Potassium incorporation for enhanced performance and stability of fully inorganic cesium lead halide perovskite solar cells[J]. Nano Lett. , 2017, 17(3):2028-2033.

HUANG S Q, WANG B, ZHANG Q, et al.. Postsynthesis potassium-modification method to improve stability of CsPbBr 3 perovskite nanocrystals[J]. Adv. Opt. Mater , 2018, 6(6):1701106.

JI Y Q, WANG M Q, YANG Z, et al.. Nanowire-assisted self-assembly of one-dimensional nanocrystal superlattice chains[J]. J. Mater. Chem. C, 2019, 7(27):8471-8476.

LI F, LIU Y, WANG H L, et al.. Postsynthetic surface trap removal of CsPb X 3 ( X =Cl, Br, or I) quantum dots via a Zn X 2 /hexane solution toward an enhanced luminescence quantum yield[J]. Chem. Mater. , 2018, 30(23):8546-8554.

ABDI-JALEBI M, ANDAJI-GARMAROUDI Z, CACOVICH S, et al.. Maximizing and stabilizing luminescence from halide perovskites with potassium passivation[J]. Nature , 2018, 555(7697):497-501.

YUAN S, WANG Z K, ZHUO M P, et al.. Self-assembled high quality CsPbBr 3 quantum dot films toward highly efficient light-emitting diodes[J]. ACS Nano , 2018, 12(9):9541-9548.

吴江, 曹冠英, 张彦杰, 等. CsPbBr 3 钙钛矿量子点微晶的制备及发光性能[J].发光学报, 2019, 40(9):1073-1078.

WU J, CAO G Y, ZHANG Y J, et al.. Preparation and luminescence properties of CsPbBr 3 perovskite quantum dot microcrystals[J]. Chin. J. Lumin. , 2019, 40(9):1073-1078. (in Chinese)

ZHENG K B, ŽÍDEK K, ABDELLAH M, et al.. Trap states and their dynamics in organometal halide perovskite nanoparticles and bulk crystals[J]. J. Phys. Chem. C, 2016, 120(5):3077-3084.

PAROBEK D, DONG Y T, QIAO T, et al.. Photoinduced anion exchange in cesium lead halide perovskite nanocrystals[J]. J. Am. Chem. Soc. , 2017, 139(12):4358-4361.

余彬海, 颜才满, 饶龙石, 等.高质量钙钛矿量子点薄膜制备及性能研究[J].光子学报, 2018, 47(2):023100-1-8.

YU B H, YAN C M, RAO L S, et al.. Study on fabrication technology and properties of high quality perovskite quantum dots film[J]. Acta Photon. Sinica , 2018, 47(2):0231001-1-8. (in Chinese)

刘王宇, 陈斐, 孔淑祺, 等.全无机钙钛矿量子点的合成、性质及发光二极管应用进展[J].发光学报, 2020, 41(2):117-133.

LIU W Y, CHEN F, KONG S Q, et al.. Synthesis, properties and application of all-inorganic perovskite quantum dots[J]. Chin. J. Lumin. , 2020, 41(2):117-133. (in Chinese)

SAMBUR J B, NOVET T, PARKINSON B A, et al.. Multiple exciton collection in a sensitized photovoltaic system[J]. Science , 2010, 330(6000):63-66.

郭洁, 陆敏, 孙思琪, 等.基于CsPbBr 3 钙钛矿量子点的高柔性绿光发光二极管[J].发光学报, 2020, 41(3):233-240.

GUO J, LU M, SUN S Q, et al.. Highly flexible green light-emitting diode based on CsPbBr 3 perovskite quantum dots[J]. Chin. J. Lumin. , 2020, 41(3):233-240. (in English)

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Potassium-assisted Enhancement of Fluorescence Stability of CsPbBr3 Perovskite Quantum Dots and Their Application in QLEDs

DOI：10.3788/fgxb20204106.0691

摘要

Abstract

关键词

Keywords

references

Potassium-assisted Enhancement of Fluorescence Stability of CsPbBr₃ Perovskite Quantum Dots and Their Application in QLEDs