Optical Properties of Perovskite-Organic Multiple Quantum Wells
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
A comprehensive study of the optical properties of CsPbBr3 perovskite multiple quantum wells (MQW) with organic barrier layers is presented. Quantum confinement is observed by a blue-shift in absorption and emission spectra with decreasing well width and agrees well with simulations of the confinement energies. A large increase of emission intensity with thinner layers is observed, with a photoluminescence quantum yield up to 32 times higher than that of bulk layers. Amplified spontaneous emission (ASE) measurements show very low thresholds down to 7.3 µJ cm−2 for a perovskite thickness of 8.7 nm, significantly lower than previously observed for CsPbBr3 thin-films. With their increased photoluminescence efficiency and low ASE thresholds, MQW structures with CsPbBr3 are excellent candidates for high-efficiency perovskite-based LEDs and lasers.
Details
Originalsprache | Englisch |
---|---|
Aufsatznummer | 2200379 |
Seiten (von - bis) | e2200379 |
Fachzeitschrift | Advanced science |
Jahrgang | 9 |
Ausgabenummer | 24 |
Publikationsstatus | Veröffentlicht - 25 Aug. 2022 |
Peer-Review-Status | Ja |
Externe IDs
PubMed | 35780500 |
---|---|
Mendeley | 049b54fb-fa7f-3bbc-aba4-24f529efff06 |
ORCID | /0000-0002-4112-6991/work/142254746 |
Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- amplified spontaneous emission, confinement, luminescence, perovskite, quantum well, simulation, vacuum deposition, X-ray reflectivity