Data · dataset · 2023
Thermally evaporated MAPbBr3 perovskite random laser with improved speckle-free laser imaging
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The crystal structure of MAPbBr3:TPPO and pristine MAPbBr3 perovskite films were characterized by XRD (Philips, X’Pert Pro MRD, with Cu Kα radiation, λ = 1.54 Å).
Description
Morphology of the perovskite films were measured by SEM (ZEISS Gemini SEM 300 field-emission SEM, with Pt coating). AFM images of the perovskite films were measured by Bruker Multimode 8 AFM.
The PL spectra and the steady-state PL measurement were measured by a confocal system (WITec alpha 300R) equipped with a 405 nm continuous wave laser. For ASE experiments, a commercial Ti: sapphire regenerative amplifier (800 nm, 35 fs, 1 kHz) was employed as the two-photon pump source, and 400 nm pulse (one-photon pump source) was obtained through the second harmonic generation (SHG) from a β-barium borate crystal.
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The excitation beam was focused onto samples through a cylindrical lens, and the stripe length of the spot size was controlled by an adjustable slit. The emission signals were acquired by a fiber spectrometer (Ocean Optics) with a spectral resolution of 1 nm. Optical gain measurements were performed by using the standard VSL method, the stripe length was variable from 0 to 0.3 mm.
TA spectroscopy of the samples were measured through a Helios pump-probe system (Ultrafast system LLC), the pump wavelength is 400 nm. For random lasing experiments, the excitation beam was introduced to a confocal system (WITec alpha 300R) and focused onto the samples through an objective (10×) lens.
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Where it is published
- DOI doi.org/10.57760/sciencedb.09173 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
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- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.09173 | 11 d ago | JSON v1 |
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|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
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| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
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| concepts[modality].local:modality:image | enrichment · scidb cn | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[modality].local:modality:imaging | enrichment · scidb cn | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |