期刊
ACS NANO
卷 12, 期 11, 页码 10968-10976出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.8b04854
关键词
distributed feedback cavity; lead halide perovskite; direct patterning; wavelength control; silicon compatibility
类别
资金
- UT Dallas faculty start-up fund
- National Science Foundation [CBET-1606141, ECCS-0955027]
- Welch Foundation [AT-1617]
- Texas Photonics Center
Solution-processed organic inorganic lead halide perovskites have recently emerged as promising gain media for tunable semiconductor lasers. However, optically pumped continuous-wave lasing at room temperature, a prerequisite for a laser diode, has not been realized so far. Here, we report lasing action in a surface-emitting distributed feedback methylammonium lead iodide (MAPbI(3)) perovskite laser on a silicon substrate at room temperature under continuous-wave optical pumping. This outstanding performance is achieved because of the ultralow lasing threshold of 13 W/cm(2), which is enabled by thermal nanoimprint lithography that directly patterns perovskite into a high-Q cavity with large mode confinement, while at the same time, it improves perovskite's emission characteristics. Our results represent a major step toward electrically pumped lasing in organic and thin-film materials as well as the insertion of perovskite lasers into photonic integrated circuits for applications in optical computing, sensing, and on-chip quantum information.
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