Efficient hybrid white light-emitting diodes by organic-inorganic materials at different CCT from 3000K to 9000K
Journal
Optics Express
Journal Volume
23
Journal Issue
7
Pages
A204-A210
Date Issued
2015
Author(s)
Chen K.-J
Lai Y.-C
Lin B.-C
Chiu S.-H
Tu Z.-Y
Shih M.-H
Yu P
Lee P.-T
Li X
Meng H.-F
Chi G.-C
Chen T.-M
Kuo H.-C.
Abstract
The hybrid white light-emitting didoes (LED) with polyfluoren (PFO) polymer and quantum dot (QD) was investigated using dispensing method at the different correlated color temperature (CCT) for cool and warm color temperature. This result indicates that the hybrid white LED device has the higher luminous efficiency than the convention one, which could be attributed to the increased utilization rate of the UV light. Furthermore, the CIE 1931 coordinate of high quality white hybrid LED with different CCT range from 3000K to 9000K is demonstrated. Consequently, the angular-dependent CCT and the thermal issue of the hybrid white LED device were also analyzed in this study. ©2015 Optical Society of America.
Other Subjects
Semiconductor quantum dots; Color temperatures; Correlated color temperature; High quality; Luminous efficiency; Utilization rates; White LED; White light emitting diodes; White light-emitting; organic-inorganic materials
Type
journal article