DICP OpenIR
Triplet Energy Transfer from CsPbBr3 Nanocrystals Enabled by Quantum Confinement
Luo, Xiao1; Lai, Runchen1; Li, Yulu1; Han, Yaoyao1,2; Liang, Guijie1,3; Liu, Xue1; Ding, Tao1; Wang, Junhui1; Wu, Kaifeng1
Corresponding AuthorWu, Kaifeng(kwu@dicp.ac.cn)
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2019-03-13
ISSN0002-7863
DOI10.1021/jacs.8b13180
Volume141Issue:10Pages:4186-4190
Funding ProjectMinistry of Science and Technology of China[2018YFA0208703] ; National Natural Science Foundation of China[21773239]
Funding OrganizationMinistry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordHALIDE PEROVSKITES CSPBX3 ; PHOTON UP-CONVERSION ; ELECTRON-TRANSFER ; ANION-EXCHANGE ; SEMICONDUCTOR ; DOTS ; TRANSMITTER ; BR ; CL
AbstractThe spectral properties of lead halide perovskite nanocrystals (NCs) can be engineered by tuning either their sizes via the quantum confinement effect or their compositions using anion and/or cation exchange. To date, the latter is more frequently adopted, primarily because of the ease of ion exchange for lead halide perovskites, making the quantum confinement effect seemingly redundant for perovskite NCs. Here we report that quantum confinement is required for triplet energy transfer (TET) from perovskite NCs to polycyclic aromatic hydrocarbons (PAHs). Static and transient spectroscopy measurements on CsPbBr3 NC-pyrene hybrids showed that efficient TET occurred only for small-sized, quantum-confined CsPbBr3 NCs. The influences of the size-dependent driving force and spectral overlap on the TET rate were found to be negligible. Instead, the TET rate scaled linearly with carrier probability density at the NC surface, consistent with a Dexter-type TET mechanism requiring wave function exchange between the NC donors and pyrene acceptors. Efficient TET funnels the excitation energy generated in strongly light-absorbing perovskite NCs into long-lived triplets in PAHs, which may find broad applications such as photon upconversion and photoredox catalysis.
Language英语
Funding OrganizationMinistry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS IDWOS:000461537700004
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165873
Collection中国科学院大连化学物理研究所
Corresponding AuthorWu, Kaifeng
Affiliation1.Chinese Acad Sci, Ctr Energy & Environm Mat, Dalian Inst Chem Phys, State Key Lab Mol React Dynam & Dynam Res, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Hubei Univ Arts & Sci, Hubei Key Lab Low Dimens Optoelect Mat & Devices, Xiangyang 441053, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Luo, Xiao,Lai, Runchen,Li, Yulu,et al. Triplet Energy Transfer from CsPbBr3 Nanocrystals Enabled by Quantum Confinement[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2019,141(10):4186-4190.
APA Luo, Xiao.,Lai, Runchen.,Li, Yulu.,Han, Yaoyao.,Liang, Guijie.,...&Wu, Kaifeng.(2019).Triplet Energy Transfer from CsPbBr3 Nanocrystals Enabled by Quantum Confinement.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,141(10),4186-4190.
MLA Luo, Xiao,et al."Triplet Energy Transfer from CsPbBr3 Nanocrystals Enabled by Quantum Confinement".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 141.10(2019):4186-4190.
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