Photoconductivity fullerene-doped

Another interesting applications area for fullerenes is based on materials that can be fabricated using fullerene-doped polymers. Polyvinylcarbazole (PVK) and other selected polymers, such as poly(paraphcnylene-vinylene) (PPV) and phenylmethylpolysilane (PMPS), doped with a mixture of Cgo and C70 have been reported to exhibit exceptionally good photoconductive properties [206, 207, 208] which may lead to the development of future polymeric photoconductive materials. Small concentrations of fullerenes (e.g., by weight) lead to charge transfer of the photo-excited electrons in the polymer to the fullerenes, thereby promoting the conduction of mobile holes in the polymer [209]. Fullerene-doped polymers also have significant potential for use in applications, such as photo-diodes, photo-voltaic devices and as photo-refractive materials. 

Y Wang, Photoconductivity of fullerene-doped polymers, Nature, 356 585-587, 1992. 

Wang Y (1992) Photoconductivity of Fullerene-Doped Polymers, Nature 356 585-587... 

Photoconductivity of Fullerene-doped Polymers Y. Wang, Nature 356, 585-587 (1992). 

From the viewpoint of photochemistry, fuiierenes are good electron acceptors and many photoinduced reactions have been reported by using these fuiierenes as acceptors [16-20]. The excellent acceptor ability of fullerene is a key feature of photoconductivity for fullerene-doped polymer films such as poly(Af-vinylcarbazole) and poly(p-phenylene vinylene) [4, 21]. Furthermore, many derivatives of the fuiierenes have been synthesized due to high reactivities of fuiierenes [22]. Fullerene oligomers and polymers are interesting materials as well as pristine fuiierenes [23, 24]. 

Sensitizers. The photoinduced discharge rate of a PVK film increases dramatically when the film is doped with a metallofullerene, dysprosium fulleride (D54I -82), or the fullerenes C-84 and C-60. A PVK film doped with DyC-82 displayed better pbotoconductivity than a film doped with C-84. This explains that DyC-82 is a better electron acceptor than C-84. However, the film doped with C-60 shows the best photoconductivity. ... 

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