This is a sponsored post by TCI Chemicals

A team of scientists, led by the Toda Research Center at Tokyo Chemical Industry Company Limited (TCI) and Kyoto University, has designed and synthesized a series of cost-effective hole-transporting materials (TOP-HTMs) for perovskite solar cells.

Additive-free, Cost-Effective Hole-Transporting Materials for Perovskite Solar Cells by TCI image

The newly designed materials were successful in realizing high power conversion efficiencies (PCEs) both with and without additives. In addition, the resulting solar cell that was fabricated using these materials showed impressively high stability.

CH3NH3PbI3-based solar cells using TOP-HTM1 and TOP-HTM2 with additives gave high PCEs of 13.1% and 18.6%, respectively. Crucially, TOP-HTMs gave high working device efficiency without the need for conduction-enhancing additives.

TCI fabrication of devices image

The PCEs for the devices with additive-free TOP-HTM1 and TOP-HTM2 were 15.0% and 16.6%, respectively. Device stabilities are also enhanced and are superior to the reference HTM, 2,2,7,7-tetrakis(N,N-di-p-methoxyphenylamine)-9,9-spirobifluorene (Spiro-OMeTAD).

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