Tailoring Optical Properties of Luminescent Semiconducting Nanocrystals through Hydrostatic, Anisotropic Static, and Dynamic Pressures

Luminescent semiconductor nanocrystals are a fascinating class of materials because of their size‐dependent emissions. Numerous past studies have demonstrated that semiconductor nanoparticles with radii smaller than their Bohr radius experience quantum confinement and thus size‐dependent emissions....

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Published inAngewandte Chemie Vol. 133; no. 18; pp. 9856 - 9872
Main Authors Biesold, Gill M., Liang, Shuang, Brettmann, Blair, Thadhani, Naresh, Kang, Zhitao, Lin, Zhiqun
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 26.04.2021
Subjects
Anisotropy
Chemistry
Crystals
Electronic structure
Emissions
Hydrostatic pressure
Lattices
Metal halides
Nanocrystals
Nanoparticles
Optical properties
Perovskites
photoluminescence
Pressure
Pressure dependence
Pressure effects
Quantum confinement
Quantum dots
semiconductor nanocrystals
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Summary:Luminescent semiconductor nanocrystals are a fascinating class of materials because of their size‐dependent emissions. Numerous past studies have demonstrated that semiconductor nanoparticles with radii smaller than their Bohr radius experience quantum confinement and thus size‐dependent emissions. Exerting pressure on these nanoparticles represents an additional, more dynamic, strategy to alter their size and shift their emission. The application of pressure results in the lattices becoming strained and the electronic structure altered. In this Minireview, colloidal semiconductor nanocrystals are first introduced. The effects of uniform hydrostatic pressure on the optical properties of metal halide perovskite (ABX3), II–VI, III–V, and IV–VI semiconductor nanocrystals are then examined. The optical properties of semiconductor nanocrystals under static and dynamic anisotropic pressure are then summarized. Finally, future research directions and applications utilizing the pressure‐dependent optical properties of semiconductor nanocrystals are discussed. This Minireview summarizes the pressure‐dependence of the optical properties of all‐inorganic and organolead perovskite, II–VI, III–V, and IV–VI semiconductor nanocrystals. Obtaining a better understanding of the optical behavior of semiconductors under pressure provides insight into the interplay of quantum confinement and mechanical effects.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.202008395