Photobiologically Safe High Color Rendering Index White Organic Light-Emitting Devices

Author

Wei Zhang ; Xuemei Wen ; Jing Yu ; Wenbo Liu ; Wenfa Xie ; Letian Zhang

Author_Institution

State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun, China

Volume

26

Issue

17

fYear

2014

fDate

Sept.1, 1 2014

Firstpage

1691

Lastpage

1694

Abstract

A high color rendering index (CRI) white organic light-emitting devices with photobiological safety is demonstrated. The effect of the active layer thickness on CRI and blue light hazard is demonstrated. The optimized device shows a high general CRI of 97, a special CRI R₉ of 94, and a power efficiency of 15.2 lm/W. The correlated color temperature is 2161. The device could be classified into low risk group at ~2000 cd/m², which is proved to be safe for our eyes and could be applied to indoor illumination.

Keywords

colour; organic light emitting diodes; active layer thickness; blue light hazard; correlated color temperature; high color rendering index white organic light-emitting devices; photobiologically safe white organic light-emitting devices; power efficiency; Cathodes; Color; Excitons; Hazards; Indexes; Materials; Rendering (computer graphics); Organic light-emitting device; color rendering index;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2326854

Filename

6823146