Property and Relationship between Organic Sensitizer of Dye-Sensitized Solar Cells, Small Molecules of Organic Solar Cells, and Hole Transporting Materials of Perovskite Based Solar Cells

Jaejung Ko^a, Kidong Kim^a, Janggeun Shim^a, Hyejeong Lee^a, Hyunjoon Jo^a, Sojin Park^a, Hyeju Choi^a, Kwangseok Do^a

^aDepartment of Materials Chemistry, 9-420, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong city, 339700, Korea, Republic of

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Invited Speaker, Jaejung Ko, presentation 078
Publication date: 5th February 2015

Increasing global warming is recognized as the most critical issues encountered in this century. Therefore, research target at solar energy harvesting is currently under extensive investigation. One promising technology would be dye-sensitized solar cell, which is expected to dominate the low-cost market in the future. In the DSSCs, numerous organic sensitizers have been used as light harvest. Recently, impressive photovoltaic performances have been reported using organic sensitizers, showing promissing efficiency in the range of 9~11%. Another promissing technology would be organic solar cell. Numerous polymers have been used as light harvester. Due to the synthetic difficulty and various molecular weight distribution, many research groups have expended endeavors to develop small molecules as the alternative sensitizers. Interestingly, organic sensitizers ans small molecular have a close resemblance in terms of synthesis ans performances. We have successfully synthesized many efficient small molecules by a slight structural modification of organic sensitizers. Recently, perovskite based solar cells have attracted great interest due to high efficiency and stability. In this solar cells, spiro-OMeTAD is a typical hole transporting material. However, spiro-OMeTAD is quite expensive. For the commercial production, cheap HTMs has to be developed. For high efficiency, HTMs have high mobility. Using a similar concept of small molecule, we have designed numerous HTMs. In this presentation, we would like to report the relationship between organic sensitizers of DSSC, small molecule of OPV and HTMs of perovskite based solar cell when designing these materials.

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International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

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