All–Inorganic Hetero–Structured Cesium Tin Halide Perovskite LEDs (Phys. Status Solidi RRL 5/2018). Issue 5 (May 2018)

• Record Type: Journal Article
• Authors: Yuan, Fang; Xi, Jun; Dong, Hua; Xi, Kai; Zhang, Wenwen; Ran, Chenxin; Jiao, Bo; Hou, Xun; Jen, Alex K.‐Y.; Wu, Zhaoxin
• Is Part Of: Physica status solidi. Volume 12:Issue 5(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-05
• Subjects: Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201870315
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : Pursuing novel materials for fabricating efficient electrically pumped lasing diodes (LDs) with tunable emission wavelength has been the dream of numerous researchers in the world for decades. Hybrid halide perovskites have recently emerged as new promising semiconductors for optoelectronic applications such as light emitting diodes and lasers due to their high photoluminescence quantum efficiency, optical gain and carrier mobility. Aiming at electrically pumped LDs, Zhaoxin Wu and co‐workers demonstrate all‐inorganic hetero‐structrured perovskite light‐emitting diodes (PeLEDs) by all vacuum vapor‐deposition, which exhibit excellent electroluminescent properties, and can sustain very high current density up to 915 A/cm 2 (article no.1800090 ). Extremely smooth, uniform and full coverage cesium tin halide films with very small grain size are achieved, which show the low threshold amplified spontaneous emission (ASE) and tunable lasing emissions in broader wavelengths. These combined desirable characteristics of electrically pumped spontaneous emission and optically pumped ASE are important requisites needed for demonstrating electrically pumped LDs.