Abstract

It is usually believed that surface plasmon (SP) coupling is practically useful only for improving the performance of a light-emitting diode (LED) with a low intrinsic internal quantum efficiency (IQE). In this Letter, we demonstrate that the performance of a commercial-quality blue LED with a high IQE (>80%) can still be significantly improved through SP coupling based on a surface Ag nanoparticle (NP) structure. The performance improvement of such an LED is achieved by increasing the Mg doping concentration in its p-AlGaN electron blocking layer to enhance the hole injection efficiency such that the p-GaN layer thickness can be significantly reduced without sacrificing its electrical property. In this situation, the distance between surface Ag NPs and quantum wells is decreased and hence SP coupling strength is increased. By reducing the distance between the surface Ag NPs and the top quantum well to 66 nm, the IQE can be increased to almost 90% (an 11% enhancement) and the electroluminescence intensity can be enhanced by 24%.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Surface plasmon coupling for suppressing p-GaN absorption and TM-polarized emission in a deep-UV light-emitting diode

Yang Kuo, Chia-Ying Su, Chieh Hsieh, Wen-Yen Chang, Chu-An Huang, Yean-Woei Kiang, and C. C. Yang
Opt. Lett. 40(18) 4229-4232 (2015)

Dependencies of surface plasmon coupling effects on the p-GaN thickness of a thin-p-type light-emitting diode

Chia-Ying Su, Chun-Han Lin, Yu-Feng Yao, Wei-Heng Liu, Ming-Yen Su, Hsin-Chun Chiang, Meng-Che Tsai, Charng-Gan Tu, Hao-Tsung Chen, Yean-Woei Kiang, and C. C. Yang
Opt. Express 25(18) 21526-21536 (2017)

Coupling of a light-emitting diode with surface plasmon polariton or localized surface plasmon induced on surface silver gratings of different geometries

Yu-Feng Yao, Chun-Han Lin, Chen-Yao Chao, Wen-Yen Chang, Chia-Ying Su, Charng-Gan Tu, Yean-Woei Kiang, and C. C. Yang
Opt. Express 26(7) 9205-9219 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription