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.
|Number of pages||4|
|Journal||Digest of Technical Papers - SID International Symposium|
|State||Published - 1 Jan 2012|
|Event||49th SID International Symposium, Seminar and Exhibition, dubbed Display Week, 2012 - Boston, United States|
Duration: 3 Jun 2012 → 8 Jun 2012