Regulating Exciton–Phonon Coupling to Achieve a Near-Unity Photoluminescence Quantum Yield in One-Dimensional Hybrid Metal Halides

Luo，Hui1; Guo，Songhao1; Zhang，Yubo2; Bu，Kejun1; Lin，Haoran3; Wang，Yingqi1; Yin，Yanfeng4; Zhang，Dongzhou5; Jin，Shengye4; Zhang，Wenqing2; Yang，Wenge1; Ma，Biwu6; Xujie，L.1

2021

10.1002/advs.202100786

Advanced Science   影响因子和分区

2198-3844

Low-dimensional hybrid metal halides are emerging as a highly promising class of single-component white-emitting materials for their unique broadband emission from self-trapped excitons (STEs). Despite substantial progress in the development of these metal halides, many challenges remain to be addressed to obtain a better fundamental understanding of the structure–property relationship and realize the full potentials of this class of materials. Here, via pressure regulation, a near 100% photoluminescence quantum yield (PLQY) of broadband emission is achieved in a corrugated 1D hybrid metal halide CNHPbBr, which possesses a highly distorted structure with an initial PLQY of 10%. Compression reduces the overlap between STE states and ground state, leading to a suppressed phonon-assisted non-radiative decay. The PL evolution is systematically demonstrated to be controlled by the pressure-regulated exciton–phonon coupling which can be quantified using Huang–Rhys factor S. Detailed studies of the S-PLQY relation for a series of 1D hybrid metal halides (CNHPbBr, CNHPbBr, CNHPbBr, and (CNH)PbBr) reveal a quantitative structure–property relationship that regulating S factor toward 28 leads to the maximum emission.

1D hybrid metal halides exciton–phonon coupling Huang–Rhys factor pressure regulation self-trapped excitons

SCI ; EI

英语

其他

WOS:000652808100001

20212110413220

Excitons ; Ground state ; Hybrid materials ; Metals ; Phonons ; Photoluminescence ; Quantum yield

Light/Optics:741.1 ; Physical Chemistry:801.4 ; Chemical Products Generally:804

2-s2.0-85106265323

Scopus

1.Center for High Pressure Science and Technology Advanced Research (HPSTAR),Shanghai,1690 Cailun Rd, Pudong,201203,China
2.Department of Physics and Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Hoffmann Institute of Advanced Materials,Shenzhen Polytechnic,Shenzhen,518055,China
4.State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for,Energy and Environmental Materials,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
5.Hawaii Institute of Geophysics and Planetology,University of Hawaii Manoa,Honolulu,96822,United States
6.Department of Chemistry and Biochemistry,Florida State University,Tallahassee,32306,United States

Luo，Hui,Guo，Songhao,Zhang，Yubo,等. Regulating Exciton–Phonon Coupling to Achieve a Near-Unity Photoluminescence Quantum Yield in One-Dimensional Hybrid Metal Halides[J]. Advanced Science,2021,8.

Luo，Hui.,Guo，Songhao.,Zhang，Yubo.,Bu，Kejun.,Lin，Haoran.,...&Xujie，L..(2021).Regulating Exciton–Phonon Coupling to Achieve a Near-Unity Photoluminescence Quantum Yield in One-Dimensional Hybrid Metal Halides.Advanced Science,8.

Luo，Hui,et al."Regulating Exciton–Phonon Coupling to Achieve a Near-Unity Photoluminescence Quantum Yield in One-Dimensional Hybrid Metal Halides".Advanced Science 8(2021).