Intedigitated p-n junction: a route to improve the efficiency in organic photovoltaic cells

被引：13

作者：

Murgia, M ^{[1
]}

Biscarini, F ^{[1
]}

Cavallini, M ^{[1
]}

Taliani, C ^{[1
]}

Ruani, G ^{[1
]}

机构：

[1] CNR, Ist Spettroscopia Mol, I-40129 Bologna, Italy

来源：

SYNTHETIC METALS | 2001年 / 121卷 / 1-3期

关键词：

solar cells; hetero-junctions; polycrystalline thin films; fullerenes and derivatives; evaporation and sublimation;

D O I：

10.1016/S0379-6779(00)01167-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The short mean free path of excitons photogenerated in real organic photovoltaic (O-PV) cell strongly reduces the effective active volume of a device. In fact, in a p-n junction O-PV structure, only those excitons that are formed close to the interface between the n-type and the p-type materials are able to dissociate giving free carriers. One of the possible routes to increase the efficiency of a O-PV, is to extend the surface area of the junction. Within this perspective, an interdigitated structure has been obtained by controlled differential co-sublimation in UHV of C-60 (n-type) and Zn-phthalocyanine (ZnPc, p-type). Spectroscopic investigation evidenced that the increase of the photovoltaic efficiency is related also to the existence of a weak charge transfer (CT) absorption state in the near infrared region.

引用

页码：1533 / 1534

页数：2

共 8 条

[1] EFFICIENT PHOTODIODES FROM INTERPENETRATING POLYMER NETWORKS [J].