Showing papers by "Cao Weiran published in 2012"
TL;DR: In this article, a transparent polymer microlens array is used to enhance light harvesting in many different organic-based photovoltaic cells, which increases the light path in the active layer and reduces surface reflection, resulting in a 15-60% relative increase in overall cell efficiency.
Abstract: We report a new optical approach that can be used to enhance light harvesting in many different organic-based photovoltaic cells. A transparent polymer microlens array moulded on the light incident surface increases the light path in the active layer and reduces surface reflection, resulting in a 15–60% relative increase in overall cell efficiency.
105 citations
TL;DR: The light extraction efficiency in organic light-emitting devices (OLEDs) is enhanced by up to 2.6 times when a close-packed, hemispherical transparent polymer microlens array (MLA) is molded on the light-Emitting surface of a top-emitter device.
Abstract: The light extraction efficiency in organic light-emitting devices (OLEDs) is enhanced by up to 2.6 times when a close-packed, hemispherical transparent polymer microlens array (MLA) is molded on the light-emitting surface of a top-emitting device. The microlens array helps to extract the waveguided optical emission in the organic layers and the transparent top electrode, and can be manufactured in large area with low cost.
97 citations
TL;DR: In this article, the authors used the MoO 3 /thin metal/MoO 3 trilayer structure to replace the ITO electrode in organic solar cells (OSCs) and achieved a maximum power conversion efficiency of up to 2.5% under simulated 1 sun AM 1.5 solar illumination.
90 citations
11 Nov 2012
TL;DR: In this article, the light extraction efficiency in organic light-emitting devices was enhanced using polymer microlens arrays fabricated by a soft lithography method and a maximum of 2.6-fold increase in efficiency was achieved in the top emitting device geometry.
Abstract: The light extraction efficiency in organic light-emitting devices was enhanced using polymer microlens arrays fabricated by a soft lithography method. A maximum of 2.6-fold increase in efficiency was achieved in the top-emitting device geometry.