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.

引用

页数：7

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