Luminous and conversion efficiency improvement in oled/opv tandem device with omnidirectional antireflection nanopillars

Yu Hsuan Ho, Shun Wei Liu, Hsun Liang, Fang Chung Chen, Wei Cheng Tian, Pei Kuen Wei*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

We present an antireflection structure consisted of irregular nanopillars to reduce the substrate surface reflection of OLED/OPV hybrid device, which both the luminous efficiency and energy conversion efficiency had great improvement. The nanopillars were made on flexible polycarbonate substrates by using nanoimprint method with anodized aluminum oxide template. The average reflectivity of the patterned polycarbonate substrate in visible wavelength was reduced to 3.3% in the optimized case. With the antireflection structure, the luminous intensity for OLED was improved 49.8% as compared to the device with flat substrates. The power conversion efficiency for OPV was improved from 0.48% to 0.55%, which had 14.6% enhancement at normal incidence.

Original languageEnglish
Pages (from-to)1516-1519
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume43
Issue number1
DOIs
StatePublished - 1 Jan 2012
Event49th SID International Symposium, Seminar and Exhibition, dubbed Display Week, 2012 - Boston, United States
Duration: 3 Jun 20128 Jun 2012

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