Modulation of recombination zone position for white perovskite/organic emitter hybrid light-emitting devices

Zhang, Xiang; Yan, Xiaoheng; Gray, Lindsey J.; Xu, Junwei; Xie, Wenfa; Carroll, David L.

doi:10.1063/5.0077633

Title: Modulation of recombination zone position for white perovskite/organic emitter hybrid light-emitting devices

Journal Article · 27 February 2022 · Applied Physics Letters

DOI: https://doi.org/10.1063/5.0077633 · OSTI ID:1867417

^[1]; Yan, Xiaoheng ^[2];

^[2]; Xu, Junwei ^[3];

^[4];

^[2]

Hefei Univ. of Technology (China); Wake Forest Univ., Winston-Salem, NC (United States); Jilin Univ., Changchun (China)
Wake Forest Univ., Winston-Salem, NC (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Jilin Univ., Changchun (China)

We report metal halide perovskites present specific challenges as emitters in large area, surface emission lighting devices. Among these challenges is the vast difference in carrier mobilities between the perovskite and many organic buffer layers typically used in such device fabrication as transport and blocking layers. This can make it difficult to engineer recombination to achieve white emitting devices generally. However, in this work, we introduce unique modulation of excitonic confinement within the perovskite layer of the device stack to control overall placement of the recombination zone. This results in a white light emitter that is bright and highly tunable, providing a path to realize white perovskite related light-emitting devices.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: China Scholarship Council; National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1867417

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 9 Vol. 120; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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