Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 36, Pages 30051-30057Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b12474
Keywords
white LED; organic metal halide hybrid; down conversion phosphor; high color rendering index; solid-state lighting
Funding
- National Science Foundation (NSF) [DMR-1709116]
- Air Force Office of Scientific Research (AFOSR) [17RT0906]
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Here we report ultraviolet (UV)-pumped white-light-emitting diodes (WLEDs) with sunlike full spectrum emissions, by using a commercially available blue phosphor (BaMgAl10O17:Eu2+) and a series of broadband zero-dimensional (OD) organic metal halide hybrids as down conversion phosphors. By controlling the blend ratio of phosphors, we have achieved high-quality WLEDs with excellent general color rendering index (CRI R-a) of up to 99 and deep-red rendering index (R9) of up to 99. These WLEDs exhibiting white emissions with correlated color temperatures (CCTs) ranging from 3000 to 6000 K perfectly mimic sunlight at different times of day.
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