Efficient single-layer light-emitting diodes based on organic–inorganic lead halide perovskite and tuning luminescence properties
الموضوعات : Journal of Theoretical and Applied Physics
Soghra Mirershadi
1
(Department of Engineering Sciences, Faculty of Advanced Technologies, University of Mohaghegh Ardabili;Department of Engineering Sciences, Faculty of Advanced Technologies, Sabalan University of Advanced Technologies (SUAT))
Asal Javad
2
(School of Engineering-Emerging Technologies, University of Tabriz;Department of Electrical Engineering, Science and Research Branch, Islamic Azad University)
Sohrab Ahmadi-Kandjani
3
(Research Institute for Applied Physics and Astronomy, University of Tabriz)
الکلمات المفتاحية: Perovskite light, emitting diode, Lead halide perovskite, Electroluminescence, Thin Film,
ملخص المقالة :
AbstractBecause of the interesting features of the organic/inorganic halide perovskite (e.g., CH3NH3PbX3, X = Cl, Br) materials, such as long electron–hole diffusion length, high absorption coefficient and adjustable band gap, they have attracted a great deal of attention. In this research, CH3NH3PbX3 (X = Br, Cl) are synthesized and perovskite-based single-layer and perovskite-based bilayer diodes are fabricated. Using electron beam deposition technique, thin films of CH3NH3PbX3 (X = Br, Cl) hybrids with excellent homogeneity are manufactured. Absorption spectrum, X-ray spectrum and photoluminescence spectrum of organic/inorganic halide perovskites along with electroluminescence spectra, SEM micrographs and current–voltage characteristic of perovskite-based light-emitting diodes are investigated. Perovskite-based bilayer diodes are evaluated for the first time. The difference between the emission wavelengths of single-layer and bilayer diodes is the main characteristic of bilayer diodes.
