Stable, Strongly Emitting Cesium Lead Bromide Perovskite Nanorods with High Optical Gain Enabled by an Intermediate Monomer Reservoir Synthetic Strategy

Wang, Sheng1; Yu, Jiahao2; Zhang, Minyi3; Chen, Dechao4; Li, Chunsen3; Chen, Rui2; Jia, Guohua4; Rogach, Andrey L.5,6; Yang, Xuyong1

2019-09

10.1021/acs.nanolett.9b02436

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

One-dimensional (1D) semiconductor nanorods are important for numerous applications ranging from optics and electronics to biology, yet the direct synthesis of high-quality metal halide perovskite nanorods remains a challenge. Here, we develop an intermediate monomer reservoir synthetic strategy to realize the controllable growth of uniform and low-defect CsPbBr3 perovskite nanorods. Intermediates composed of CsPb2Br5 and Cs3In2Br9 are obtained through the substitution of Pb2+ with In3+ cations in the template of CsPbBr3 nanocubes and act as a precursor reservoir to gradually release monomers, ensuring both the slow growth rate and low defects of nanorods. We have used branched tris(diethylamino)phosphine as a ligand, which not only has unequal binding energies with different crystal faces to promote the orientation growth but also provides strong steric hindrance to shield the nanorods in solution. Because of minor amount of defects and an effective ligand passivation, in addition to significantly enhanced stability, the perovskite nanorods show a high photoluminescence quantum yield of up to 90% and exhibit a net mode gain of 980 cm(-1), the latter being a record value among all the perovskite materials. An extremely low amplified spontaneous emission threshold of 7.5 mu J cm(-2) is obtained under excitation by a nanosecond laser, which is comparable to that obtained using femtosecond lasers in other recent studies.

Cesium lead bromide perovskites nanorods amplified spontaneous emissions high mode gain intermediate monomers

SCI ; EI

英语

NI期刊

通讯

ARC DECRA[DE160100589]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000486361900062

AMER CHEMICAL SOC

20194107508947

Binding energy ; Bromine compounds ; Cesium compounds ; Crystal orientation ; Defects ; Growth rate ; Indium compounds ; Laser excitation ; Ligands ; Metal halides ; Monomers ; Nanorods ; Perovskite ; Phosphorus compounds ; Semiconductor lasers ; Spontaneous emission

Minerals:482.2 ; Electromagnetic Waves:711 ; Semiconductor Lasers:744.4.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Chemical Products Generally:804 ; Solid State Physics:933 ; Crystal Lattice:933.1.1 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Shanghai Univ, Key Lab Adv Display & Syst Applicat, Minist Educ, 149 Yanchang Rd, Shanghai 200072, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Chinese Acad Sci, State Key Lab Struct Chem, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China
4.Curtin Univ, Curtin Inst Funct Mol & Interfaces, Sch Mol & Life Sci, Perth, WA 6845, Australia
5.City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, 83 Tat Chee Ave, Hong Kong, Peoples R China
6.City Univ Hong Kong, CFP, Kowloon, 83 Tat Chee Ave, Hong Kong, Peoples R China

Wang, Sheng,Yu, Jiahao,Zhang, Minyi,et al. Stable, Strongly Emitting Cesium Lead Bromide Perovskite Nanorods with High Optical Gain Enabled by an Intermediate Monomer Reservoir Synthetic Strategy[J]. NANO LETTERS,2019,19(9):6315-6322.

Wang, Sheng.,Yu, Jiahao.,Zhang, Minyi.,Chen, Dechao.,Li, Chunsen.,...&Yang, Xuyong.(2019).Stable, Strongly Emitting Cesium Lead Bromide Perovskite Nanorods with High Optical Gain Enabled by an Intermediate Monomer Reservoir Synthetic Strategy.NANO LETTERS,19(9),6315-6322.

Wang, Sheng,et al."Stable, Strongly Emitting Cesium Lead Bromide Perovskite Nanorods with High Optical Gain Enabled by an Intermediate Monomer Reservoir Synthetic Strategy".NANO LETTERS 19.9(2019):6315-6322.