Thin film solar cells, organic polymers

In order to understand the remarkable improvement of device efficiency introduced by BHJ structures, the working mechanism of polymer solar cells has to be clarified. The working mechanism of organic thin-film solar cells can be broken down as follows ... 

As a class of n-type organic semiconductors, PBI derivatives have received considerable attention for a variety of applications [312, 313], for example, for organic or polymer light-emitting diodes (OLEDs and PLEDs) [314, 315], thin-film organic field-effect transistors (OFETs) [316, 317], solar cells [318, 319], and liquid crystals [320]. They are also interesting candidates for single-molecule device applications, such as sensors [321], molecular wires [322], or transistors [141]. 

FIGURE 3.4 (A) Fabrication of polymer solar cell from PEDOTiPSS thin film. (B) Fabrication of a three-dimensional (3D) nonwoven nanofabric-based organic solar cell. (A) Reproduced with permission from reference Oh, J.Y., Shin, M., Lee, J.B., Ahn, J.-H., Baik, H.K., Jeong, U., 2014. Effect ofPEDOT nanofibril networks on the conductivity, flexibility, and coatability of PEDOT PSS films. ACSAppl. Mater. Interfaces 6, 6954-6961. Copyright 2014, Royal Society of Chemistry. 

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