Capping ligands controlled structural and optoelectronic properties of CsPbBr3 nanocrystals

被引：7

作者：

Bhardwaj, Aditya ^{[1
]}

Kushwaha, Ajay Kumar ^{[1
,2
]}

机构：

[1] Indian Inst Technol Indore, Dept Met Engn & Mat Sci, Indore 453552, MP, India

[2] Indian Inst Technol Indore, Ctr Adv Elect CAE, Indore 453552, MP, India

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2022年 / 33卷 / 21期

关键词：

PEROVSKITE QUANTUM DOTS; ELECTRON-TRANSFER RATES; PHOTOLUMINESCENCE; CHEMISTRY; EFFICIENT; CSPBX3; GROWTH; ACID;

D O I：

10.1007/s10854-022-08622-x

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The relative amount of capping ligands plays an integral role in stability of CsPbBr3 perovskite nanocrystal. The hot-injection approach is implemented for synthesis of CsPbBr3 nanocrystals by changing the concentrations of Oleic acid:Oleylamine. Lower oleic acid concentration with respect to oleylamine concentration resulted in formation of orthorhombic CsPbBr3, along with slight blue shift in absorbance spectra with better size control of nanocrystals. However, the higher oleic acid concentration with respect to oleylamine lead to formation of tetragonal CsPb2Br5, red shift in absorbance spectra, aggregation of perovskite nanocrystals. The concentration ratio of 0.4:0.6 of capping ligands i.e., oleic acid to oleylamine is found to be the optimized for attaining stable CsPbBr3 perovskite nanocrystals, rendering improved photoresponse of CsPbBr3 perovskite nanocrystals film. The photocurrent density of CsPbBr3 perovskite nanocrystals film with oleic acid to oleylamine ratio of 0.4:0.6 is observed to be similar to 1.9 x 10(-9) A/cm(2) at 1 V bias. The investigations confirm that by tuning the concentration of capping ligands the structural, optoelectronics properties of CsPbBr3 perovskite nanocrystals can be effectively controlled as per the application.

引用

页码：17404 / 17416

页数：13

共 53 条

[1] Effect of Dispersion Solutions on Optical Properties and Stability of CsPbBr3 Perovskite Nanocrystals [J].

Bhardwaj, Aditya ;

Kushwaha, Ajay Kumar .

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, 2022, 11 (03)

[2] Oleic Acid/Oleylamine Cooperative-Controlled Crystallization Mechanism for Monodisperse Tetragonal Bipyramid NaLa(MoO4)2 Nanocrystals [J].

Bu, Wenbo ;

Chen, Zhenxing ;

Chen, Feng ;

Shi, Jianlin .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (28) :12176-12185

[3] Tunable photoluminescence of CsPbBr3 perovskite quantum dots for their physical research [J].

Chen, Haitao ;

Guo, Anqi ;

Zhu, Jun ;

Cheng, Liwen ;

Wang, Qiang .

APPLIED SURFACE SCIENCE, 2019, 465 :656-664

[4]

Choi SH, 2005, J PHYS CHEM B, V109, P14792, DOI [10.1021/jp052934l, 10.1021/jp0529341]

[5]

de la Presa P, 2008, IEEE T MAGN, V44, P2816, DOI 10.1109/TMAG.2008.2002251

[6] Highly Dynamic Ligand Binding and Light Absorption Coefficient of Cesium Lead Bromide Perovskite Nanocrystals [J].

De Roo, Jonathan ;

Ibanez, Maria ;

Geiregat, Pieter ;

Nedelcu, Georgian ;

Walravens, Willem ;

Maes, Jorick ;

Martins, Jose C. ;

Van Driessche, Isabel ;

Koyalenko, Maksym V. ;

Hens, Zeger .

ACS NANO, 2016, 10 (02) :2071-2081

[7] Excited-State Dynamics of a CsPbBr3 Nanocrystal Terminated with Binary Ligands: Sparse Density of States with Giant Spin-Orbit Coupling Suppresses Carrier Cooling [J].

Forde, Ron ;

Inerbaev, Talgat ;

Hobbie, Erik K. ;

Kilin, Dmitri S. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2019, 141 (10) :4388-4397

[8] CsPbBr3 perovskite nanoparticles as additive for environmentally stable perovskite solar cells with 20.46% efficiency [J].

Gao, Yanbo ;

Wu, Yanjie ;

Lu, Hongbin ;

Chen, Cong ;

Liu, Yue ;

Bai, Xue ;

Yang, Lili ;

Yu, William W. ;

Dai, Qilin ;

Zhang, Yu .

NANO ENERGY, 2019, 59 :517-526

[9] The impact of ligands on the synthesis and application of metal halide perovskite nanocrystals [J].

Haydous, Fatima ;

Gardner, James M. ;

Cappel, Ute B. .

JOURNAL OF MATERIALS CHEMISTRY A, 2021, 9 (41) :23419-23443

[10] Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals [J].

Hills-Kimball, Katie ;

Yang, Hanjun ;

Cai, Tong ;

Wang, Junyu ;

Chen, Ou .

ADVANCED SCIENCE, 2021, 8 (12)

← 1 2 3 4 5 6 →