.png){kind=icon}
.png){kind=icon}
Return
Trion-Triggered Continuous-Wave Lasing in Lithium Ion-Doped Cuboidal Perovskite Microcrystals
.png){kind=icon}
OA
AI
DOI：10.31635/ccschem.024.202404821.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The achievement of efficient continuous-wave (CW) solid-state lasers has been intensively pursued in fields like spectroscopy, data communication, and sensing. However, the realization of CW lasers has been hampered by increased nonradiative recombination losses under intense photoexcitation. Here, we demonstrate trion-ignited CW lasing in lithium ion (Li+) + )-doped cuboidal perovskite microcrystals (MCs) with impeded Auger decay. Incorporating Li+ + into perovskite MCs populates the conduction band with permanent charges, which subsequently bind with excitons through Coulomb interaction to create trions. These generated trions significantly prolong optical gain lifetime as their radiative decay prevails over Auger recombination, facilitating the achievement of population inversion. As a result, the prominent emission of trion over exciton and suppression of Auger recombination at low temperatures contribute to the achievement of CW lasing action in such doped MCs. Our work provides a general approach to suppressing nonradiative recombination losses that restrict the implementation of CW and electrically pumped lasers.
Keywords:
continuous-wave laser
perovskite laser
trion gain
perovskite crystal
lithium-ion doped perovskite
Journal
IF:
9.2
Papers:
1.8K
Citations:
9.9K