Solar cells utilizing small molecular weight organic semiconductors
Tóm tắt
In this review, we focus on the field of organic photovoltaic cells based on small molecular weight materials. In particular, we discuss the physical processes that lead to photocurrent generation in organic solar cells, as well as the various architectures employed to optimize device performance. These include the donor–acceptor heterojunction for efficient exciton dissociation, the exciton blocking layer, the mixed or bulk heterojunction, and the stacked or tandem cell. We show how the choice of materials with known energy levels and absorption spectra affect device performance, particularly the open‐circuit voltage and short‐circuit current density. We also discuss the typical materials and growth techniques used to fabricate devices, as well as the issue of device stability, all of which are critical for the commercialization of low‐cost and high‐performance organic solar cells. Copyright © 2007 John Wiley & Sons, Ltd.
Từ khóa
Tài liệu tham khảo
ISI Web of Science search on March 6 2007 for: (organic OR plastic OR polymer OR dye OR molecular) AND (solar OR photovoltaic) AND cell NOT “beam epitaxy” NOT “chemical vapor deposition” NOT GaAs NOT MOCVD NOT CVD.
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