Controlling open-circuit voltage of organic photovoltaic cells by inserting thin layer of Zn-phthalocyanine at pentacene/C60 interface

Yoshiki Kinoshita; Taku Hasobe; Hideyuki Murata

doi:10.1143/JJAP.47.1234

Controlling open-circuit voltage of organic photovoltaic cells by inserting thin layer of Zn-phthalocyanine at pentacene/C₆₀ interface

Yoshiki Kinoshita, Taku Hasobe, Hideyuki Murata

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

We demonstrate organic photovoltaic cells composed of multi charge-separation (MCS) interfaces in the active layer for the improvement of power conversion efficiency (η_p). The MCS interfaces are composed of pentacene/C₆₀ and Zn-phthalocyanine (ZnPc)/C₆₀ by inserting thin layer of ZnPc at the CS interface between pentacene/C ₆₀. We obtain enhanced η_p and V_oc in accordance with the increased energy difference between the lowest unoccupied molecular orbital (LUMO) level of the n-type material (C₆₀) and the HOMO level of the p-type material (ZnPc). By inserting 2nm ZnPc at the interface, both open-circuit voltage (V_oc) and short-circuit current density (J_sc) have been improved simultaneously and the resulting η_p reaches 2.07%.

Original language	English
Pages (from-to)	1234-1237
Number of pages	4
Journal	Japanese journal of applied physics
Volume	47
Issue number	2 PART 2
DOIs	https://doi.org/10.1143/JJAP.47.1234
Publication status	Published - 2008 Feb 15
Externally published	Yes

Keywords

Multi charge separation (MCS) interfaces
V and J controlled independently

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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