The authors develop organic photovoltaic cells with multicharge separation (MCS) interfaces by inserting a very thin layer of metal phthalocyanine. The devices with MCS interface allow one to control short-circuit current density and open-circuit voltage . The power conversion efficiency of the device with MCS interface (Cu-phthalocyanine/) is enhanced compared with that of the device with single charge separation interface (pentacene/). The enhancement of is attributable to the increase in with maintaining the . By using Zn-phthalocyanine, which possesses longer excited lifetime compared with Cu-phthalocyanine, both and have been improved simultaneously and the reaches 2.04%.
Control of open-circuit voltage in organic photovoltaic cells by inserting an ultrathin metal-phthalocyanine layer
Yoshiki Kinoshita, Taku Hasobe, Hideyuki Murata; Control of open-circuit voltage in organic photovoltaic cells by inserting an ultrathin metal-phthalocyanine layer. Appl. Phys. Lett. 20 August 2007; 91 (8): 083518. https://doi.org/10.1063/1.2775085
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