Optical Properties of Perovskite-Organic Multiple Quantum Wells

被引：13
作者：
Antrack, Tobias [1 ,2 ]
Kroll, Martin [1 ,2 ]
Sudzius, Markas [1 ,2 ]
Cho, Changsoon [1 ,2 ]
Imbrasas, Paulius [1 ,2 ]
Albaladejo-Siguan, Miguel [1 ,2 ]
Benduhn, Johannes [1 ,2 ]
Merten, Lena [3 ]
Hinderhofer, Alexander [3 ]
Schreiber, Frank [3 ]
Reineke, Sebastian [1 ,2 ]
Vaynzof, Yana [1 ,2 ]
Leo, Karl [1 ,2 ]
机构：
[1] Tech Univ Dresden, Dresden Integrated Ctr Appl Phys & Photon Mat IAP, Nothnitzer Str 61, D-01187 Dresden, Germany
[2] Tech Univ Dresden, Inst Appl Phys, Nothnitzer Str 61, D-01187 Dresden, Germany
[3] Univ Tubingen, Inst Angew Phys, Morgenstelle 10, D-72076 Tubingen, Germany
来源：
ADVANCED SCIENCE | 2022年 / 9卷 / 24期
关键词：
amplified spontaneous emission; confinement; luminescence; perovskite; quantum well; simulation; vacuum deposition; X-ray reflectivity; SPONTANEOUS EMISSION; EFFICIENT; CSPBBR3;
D O I：
10.1002/advs.202200379
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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 mu J 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.
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页数：7
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