Improvement of light quality by ZrO_2 film of chip on glass structure white LED | Zendy

Huang-Yu Lin | Zendy; Zhi Ting Ye | Zendy; ChienChung Lin | Zendy; Kuo-Ju Chen | Zendy; Hsien-Hao Tu | Zendy; Huang-Ming Chen | Zendy; Cheng-Huan Chen | Zendy; HaoChung Kuo | Zendy

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Improvement of light quality by ZrO_2 film of chip on glass structure white LED

Author(s) -

Huang-Yu Lin,

Zhi Ting Ye,

ChienChung Lin,

Kuo-Ju Chen,

Hsien-Hao Tu,

Huang-Ming Chen,

Cheng-Huan Chen,

HaoChung Kuo

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.00a341

Subject(s) - materials science , optoelectronics , optics , phosphor , nanoparticle , thin film , light emitting diode , white light , nanotechnology , physics

A novel combination of blue LED chips, transparent glass substrates and phosphors with PDMS thin film is demonstrated. The flip-chip bonding technology is applied to facilitate this design. The ZrO(2) nanoparticles are also doped into the PDMS film to increase light scattering. The resultant luminous efficiency shows an 11% enhancement when compared to the regular COG device. The variation of correlated color temperature of such devices is also reduced to 132K. In addition to these changes, the surface temperature is reduced from 121°C to 104°C due to good thermal dissipation brought by ZrO(2) nanoparticles.

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