Carrier Management by Organic-Inorganic Hybrid Materials for Fully Printable Bulk-Heterojunction Thin-Film Solar Cell

(E-pub Ahead of Print)

Author(s): Takehito Kato*, Munechika Otsuka, Chihiro Oinuma, Yuki Kurokawa, Kenichi Tsukada.

Journal Name: Current Alternative Energy


Background: The phase-separated structure of a three-component system in a bulkheterojunction solar cell could be controlled by using a p-type semiconducting polymer/titanium alkoxide/fullerene derivative as the carrier management layer. Methods: Addition of the adequate amount of fullerene derivative as the phase separation assistant material in the photoactive layer resulted in a higher short-circuit current density (Jsc) as compared to that in the conventional two-component bulk-heterojunction solar cell. The three-component carrier management layer containing the fullerene derivative as the phase separation assistant material contributing to the formation of many p/n interfaces and a continuous phase-separated structure for the charge separation and charge transfer, as revealed by scanning electron microscopy observations. Results: Moreover, we report about short-term air stability of the solar cells. Conclusion: A stability test performed after 30 days indicated that the performance of the threecomponent system was equivalent to that of the conventional two-component system, which used a fullerene derivative as the elect

Keywords: Bulk-heterojunction solar cell; Organic–inorganic hybrid solar cell; Thin-film solar cell; Ti-alkoxide; Electron acceptor; Organic semiconducting polymer

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(E-pub Ahead of Print)
DOI: 10.2174/2405463102666180726142722