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Light extraction efficiency enhancement of flip-chip blue light-emitting diodes by anodic aluminum oxide.
Huang, Yi-Ru; Chiu, Yao-Ching; Huang, Kuan-Chieh; Ting, Shao-Ying; Chiang, Po-Jui; Lai, Chih-Ming; Jen, Chun-Ping; Tseng, Snow H; Wang, Hsiang-Chen.
Affiliation
  • Huang YR; Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan.
  • Chiu YC; Graduate Institute of Opto-Mechatronics, National Chung Cheng University, 168 University Rd., Min-Hsiung, Chia-Yi 62102, Taiwan.
  • Huang KC; R&D Center, Genesis Photonics Inc., No.5, Dali 3rd Rd., Shanhua Dist., Tainan City 74144, Taiwan.
  • Ting SY; R&D Center, Genesis Photonics Inc., No.5, Dali 3rd Rd., Shanhua Dist., Tainan City 74144, Taiwan.
  • Chiang PJ; Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, No.415, Jiangong Rd., Sanmin Dist., Kaohsiung City 80778, Taiwan.
  • Lai CM; Department of Electronic Engineering, Ming Chuan University, Taoyuan 333, Taiwan.
  • Jen CP; Department of Mechanical Engineering, National Chung Cheng University, 168 University Rd., Min-Hsiung, Chia-Yi 62102, Taiwan.
  • Tseng SH; Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan.
  • Wang HC; Graduate Institute of Opto-Mechatronics, National Chung Cheng University, 168 University Rd., Min-Hsiung, Chia-Yi 62102, Taiwan.
Beilstein J Nanotechnol ; 9: 1602-1612, 2018.
Article in En | MEDLINE | ID: mdl-29977694
We produced an anodic aluminum oxide (AAO) structure with periodic nanopores on the surface of flip-chip blue light-emitting diodes (FC-BLEDs). The nanopores had diameters ranging from 73 to 85 nm and were separated by distances ranging from approximately 10 to 15 nm. The light extraction efficiency enhancement of the FC-BLEDs subjected to different durations of the second pore-widening process was approximately 1.6-2.9%. The efficiency enhancement may be attributed to the following mechanism: periodic nanopores on the surface of FC-BLEDs reduce the critical angle of total reflection and effective energy transfer from a light emitter into a surface plasmon mode produced by AAO.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Beilstein J Nanotechnol Year: 2018 Document type: Article Affiliation country: Country of publication:
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Beilstein J Nanotechnol Year: 2018 Document type: Article Affiliation country: Country of publication: