1
|
Kim I, Choi GE, Mei M, Kim MW, Kim M, Kwon YW, Jeong TI, Kim S, Hong SW, Kyhm K, Taylor RA. Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation. Light Sci Appl 2023; 12:285. [PMID: 38001058 PMCID: PMC10673887 DOI: 10.1038/s41377-023-01313-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/20/2023] [Accepted: 10/22/2023] [Indexed: 11/26/2023]
Abstract
Optical gain enhancement of two-dimensional CsPbBr3 nanosheets was studied when the amplified spontaneous emission is guided by a patterned structure of polyurethane-acrylate. Given the uncertainties and pitfalls in retrieving a gain coefficient from the variable stripe length method, a gain contour [Formula: see text] was obtained in the plane of spectrum energy (ℏω) and stripe length (x), whereby an average gain was obtained, and gain saturation was analysed. Excitation and temperature dependence of the gain contour show that the waveguide enhances both gain and thermal stability due to the increased optical confinement and heat dissipation, and the gain origins were attributed to the two-dimensional excitons and the localized states.
Collapse
Affiliation(s)
- Inhong Kim
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Ga Eul Choi
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Ming Mei
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Min Woo Kim
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Minju Kim
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Young Woo Kwon
- Department of Nano-Fusion Technology, Pusan National University, Busan, 46241, Republic of Korea
| | - Tae-In Jeong
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Seungchul Kim
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Suck Won Hong
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea.
| | - Kwangseuk Kyhm
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea.
| | - Robert A Taylor
- Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, OX1 3PU, UK.
| |
Collapse
|