Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation
Optical gain enhancement of two-dimensional CsPbBr<sub>3</sub> 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...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Springer Nature
2023
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| _version_ | 1797111698132303872 |
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| author | Kim, I Choi, GE Mei, M Kim, MW Kim, M Kwon, YW Jeong, T-I Kim, S Hong, SW Kyhm, K Taylor, RA |
| author_facet | Kim, I Choi, GE Mei, M Kim, MW Kim, M Kwon, YW Jeong, T-I Kim, S Hong, SW Kyhm, K Taylor, RA |
| author_sort | Kim, I |
| collection | OXFORD |
| description | Optical gain enhancement of two-dimensional CsPbBr<sub>3</sub> 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 <strong><i>g</i>(ℏω, <i>x</i>)</strong> was obtained in the plane of spectrum energy (<strong>ℏ</strong>ω) 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. |
| first_indexed | 2024-03-07T08:13:56Z |
| format | Journal article |
| id | oxford-uuid:4f51bd37-c8b5-431b-8735-f10e6646f2a9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:13:56Z |
| publishDate | 2023 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:4f51bd37-c8b5-431b-8735-f10e6646f2a92023-12-13T17:30:03ZGain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4f51bd37-c8b5-431b-8735-f10e6646f2a9EnglishSymplectic ElementsSpringer Nature2023Kim, IChoi, GEMei, MKim, MWKim, MKwon, YWJeong, T-IKim, SHong, SWKyhm, KTaylor, RAOptical gain enhancement of two-dimensional CsPbBr<sub>3</sub> 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 <strong><i>g</i>(ℏω, <i>x</i>)</strong> was obtained in the plane of spectrum energy (<strong>ℏ</strong>ω) 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. |
| spellingShingle | Kim, I Choi, GE Mei, M Kim, MW Kim, M Kwon, YW Jeong, T-I Kim, S Hong, SW Kyhm, K Taylor, RA Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation |
| title | Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation |
| title_full | Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation |
| title_fullStr | Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation |
| title_full_unstemmed | Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation |
| title_short | Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation |
| title_sort | gain enhancement of perovskite nanosheets by a patterned waveguide excitation and temperature dependence of gain saturation |
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