Spectroscopic indications of room-temperature electron-hole droplets in optically excited CH3NH3PbBr3 single crystals
An electron-hole droplet is a unique form of matter that occurs as a metallic phase in semiconductors, and its formation has been almost exclusively linked to cryogenic condensation of long-lived excitons. Creating room-temperature electron-hole droplets in semiconductors has remained an outstanding...
Main Authors: | , , , , , , , |
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Format: | Article |
Language: | English |
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Cell Press
2022
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Online Access: | View Fulltext in Publisher |
LEADER | 01959nam a2200289Ia 4500 | ||
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001 | 10.1016-j.xcrp.2022.100896 | ||
008 | 220630s2022 CNT 000 0 und d | ||
020 | |a 26663864 (ISSN) | ||
245 | 1 | 0 | |a Spectroscopic indications of room-temperature electron-hole droplets in optically excited CH3NH3PbBr3 single crystals |
260 | 0 | |b Cell Press |c 2022 | |
520 | 3 | |a An electron-hole droplet is a unique form of matter that occurs as a metallic phase in semiconductors, and its formation has been almost exclusively linked to cryogenic condensation of long-lived excitons. Creating room-temperature electron-hole droplets in semiconductors has remained an outstanding challenge. Here, we report plausible spectroscopic indications of a cloud of room-temperature electron-hole droplets in optically excited CH3NH3PbBr3 single crystals. Droplet characters shown by the excitation threshold and optical hysteresis are demonstrated. The observed two-stage photoluminescence decaying histogram indicates rapid thermal dissociation of room-temperature excitons into hot electron-hole plasma vapor and subsequent droplet nucleation toward a metastable size. Our study sheds light on the vapor-to-liquid phase evolution in optically excited crystal bulk of direct band gap semiconductors and paves the way for further exploration toward intriguing optoelectronic and valleytronic applications. © 2022 The Author(s) | |
650 | 0 | 4 | |a absorption |
650 | 0 | 4 | |a electron-hole droplets |
650 | 0 | 4 | |a exciton |
650 | 0 | 4 | |a optical hysteresis |
650 | 0 | 4 | |a photoluminescence |
650 | 0 | 4 | |a plasma |
700 | 1 | 0 | |a Cao, L. |e author |
700 | 1 | 0 | |a Chen, C.-X. |e author |
700 | 1 | 0 | |a Chen, X.-C. |e author |
700 | 1 | 0 | |a Gao, M. |e author |
700 | 1 | 0 | |a Ma, G.-Z. |e author |
700 | 1 | 0 | |a Rao, J.-R. |e author |
700 | 1 | 0 | |a Shi, D. |e author |
700 | 1 | 0 | |a Wang, J. |e author |
773 | |t Cell Reports Physical Science | ||
856 | |z View Fulltext in Publisher |u https://doi.org/10.1016/j.xcrp.2022.100896 |