Blue-Green Color Tunable Solution Processable Organolead Chloride–Bromide Mixed Halide Perovskites for Optoelectronic Applications | Zendy

Aditya Sadhanala | Zendy; Shahab Ahmad | Zendy; Baodan Zhao | Zendy; Nadja Giesbrecht | Zendy; Phoebe Pearce | Zendy; Felix Deschler | Zendy; Robert L. Z. Hoye | Zendy; Karl C. Gödel | Zendy; Thomas Bein | Zendy; Pablo Docampo | Zendy; Siân E. Dutton | Zendy; Michaël De Volder | Zendy; Richard H. Friend | Zendy

Open Access

Blue-Green Color Tunable Solution Processable Organolead Chloride–Bromide Mixed Halide Perovskites for Optoelectronic Applications

Author(s) -

Aditya Sadhanala,

Shahab Ahmad,

Baodan Zhao,

Nadja Giesbrecht,

Phoebe Pearce,

Felix Deschler,

Robert L. Z. Hoye,

Karl C. Gödel,

Thomas Bein,

Pablo Docampo,

Siân E. Dutton,

Michaël De Volder,

Richard H. Friend

Publication year - 2015

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/acs.nanolett.5b02369

Subject(s) - halide , bromide , chloride , materials science , perovskite (structure) , optoelectronics , inorganic chemistry , chemistry , photochemistry , chemical engineering , organic chemistry , engineering

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.

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