Wide range tuning of the size and emission color of CH3NH3PbBr3 quantum dots by surface ligands
Organic-inorganic halide perovskite CH3NH3PbX3 (X= I, Br, Cl) quantum dots (QDs) possess the characters of easy solution-process, high luminescence yield, and unique size-dependent optical properties. In this work, we have improved the nonaqueous emulsion method to synt...
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2017-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4994995 |
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doaj-f1cd6c2fc5fc43889880e4bad12e9c2f2020-11-24T21:22:19ZengAIP Publishing LLCAIP Advances2158-32262017-08-0178085217085217-610.1063/1.4994995045708ADVWide range tuning of the size and emission color of CH3NH3PbBr3 quantum dots by surface ligandsXin Fang0Wenhao Zhai1Kun Zhang2Yilun Wang3Li Yao4Cheng Tian5Yi Wan6Ruixiang Hou7Yanping Li8Weixi Chen9Guangzhao Ran10State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, ChinaOrganic-inorganic halide perovskite CH3NH3PbX3 (X= I, Br, Cl) quantum dots (QDs) possess the characters of easy solution-process, high luminescence yield, and unique size-dependent optical properties. In this work, we have improved the nonaqueous emulsion method to synthesize halide perovskite CH3NH3PbBr3 QDs with tunable sizes. Their sizes have been tailored from 5.29 to 2.81 nm in diameter simply by varying the additive amount of surfactant, n-octylamine from 5 to 120 μL. Correspondingly, the photoluminescence (PL) peaks shift markedly from 520 nm to very deep blue, 436 nm due to quantum confinement effect. The PL quantum yields exceed 90% except for the smallest QDs. These high-quality QDs have potential to build high-performance optoelectronic devices.http://dx.doi.org/10.1063/1.4994995 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Xin Fang Wenhao Zhai Kun Zhang Yilun Wang Li Yao Cheng Tian Yi Wan Ruixiang Hou Yanping Li Weixi Chen Guangzhao Ran |
| spellingShingle |
Xin Fang Wenhao Zhai Kun Zhang Yilun Wang Li Yao Cheng Tian Yi Wan Ruixiang Hou Yanping Li Weixi Chen Guangzhao Ran Wide range tuning of the size and emission color of CH3NH3PbBr3 quantum dots by surface ligands AIP Advances |
| author_facet |
Xin Fang Wenhao Zhai Kun Zhang Yilun Wang Li Yao Cheng Tian Yi Wan Ruixiang Hou Yanping Li Weixi Chen Guangzhao Ran |
| author_sort |
Xin Fang |
| title |
Wide range tuning of the size and emission color of
CH3NH3PbBr3 quantum dots by surface
ligands |
| title_short |
Wide range tuning of the size and emission color of
CH3NH3PbBr3 quantum dots by surface
ligands |
| title_full |
Wide range tuning of the size and emission color of
CH3NH3PbBr3 quantum dots by surface
ligands |
| title_fullStr |
Wide range tuning of the size and emission color of
CH3NH3PbBr3 quantum dots by surface
ligands |
| title_full_unstemmed |
Wide range tuning of the size and emission color of
CH3NH3PbBr3 quantum dots by surface
ligands |
| title_sort |
wide range tuning of the size and emission color of
ch3nh3pbbr3 quantum dots by surface
ligands |
| publisher |
AIP Publishing LLC |
| series |
AIP Advances |
| issn |
2158-3226 |
| publishDate |
2017-08-01 |
| description |
Organic-inorganic halide perovskite CH3NH3PbX3 (X= I,
Br, Cl) quantum dots (QDs) possess the characters of easy solution-process, high
luminescence yield, and unique size-dependent optical properties. In this work, we have
improved the nonaqueous emulsion method to synthesize halide perovskite
CH3NH3PbBr3 QDs with tunable sizes. Their sizes have
been tailored from 5.29 to 2.81 nm in diameter simply by varying the additive amount of
surfactant, n-octylamine from 5 to 120 μL. Correspondingly, the photoluminescence (PL)
peaks shift markedly from 520 nm to very deep blue, 436 nm due to quantum confinement
effect. The PL quantum yields exceed 90% except for the smallest QDs. These high-quality
QDs have potential to build high-performance optoelectronic devices. |
| url |
http://dx.doi.org/10.1063/1.4994995 |
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