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Blue-Green Color Tunable Solution Processable Organolead Chloride-Bromide Mixed Halide Perovskites for Optoelectronic Applications
A. Sadhanala, , B. Zhao, N. Giesbrecht, P.M. Pearce, F. Deschler, R.L.Z. Hoye, K.C. Gödel, T. Bein, P. DocampoShow More
Published in American Chemical Society
Volume: 15
Issue: 9
Pages: 6095 - 6101
Solution-processed organo-lead halide perovskites are produced with sharp, color-pure electroluminescence that can be tuned from blue to green region of visible spectrum (425-570 nm). This was accomplished by controlling the halide composition of CH3NH3Pb(BrxCl1-x)3 [0 ≥ x ≥ 1] perovskites. The bandgap and lattice parameters change monotonically with composition. The films possess remarkably sharp band edges and a clean bandgap, with a single optically active phase. These chloride-bromide perovskites can potentially be used in optoelectronic devices like solar cells and light emitting diodes (LEDs). Here we demonstrate high color-purity, tunable LEDs with narrow emission full width at half maxima (FWHM) and low turn on voltages using thin-films of these perovskite materials, including a blue CH3NH3PbCl3 perovskite LED with a narrow emission FWHM of 5 nm. © 2015 American Chemical Society.
About the journal
JournalData powered by TypesetNano Letters
PublisherData powered by TypesetAmerican Chemical Society