ProductsOPV - n-type Materials



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o-IDTBR was first used with P3HT to build remarkably air-stable OPV devices with a PCE over 6.3%. Comparison with fullerene-based devices demonstrated a much improved stability, with 73% of the device efficiency retained after 1200 hours (stored in the dark). A ternary blend with IDFBR further improved efficiency of this system to 7.7%. Devices made with this blend achieved efficiencies over 85% of their original efficiency after 90h in air under 1 sun. P3HT:PC71BM devices failed completely after 50 hours in these conditions.

o-IDTBR has also shown potential with other polymers, reaching efficiencies close to 10% with the PffBT4T-2DT polymer thanks to a reduced voltage loss resulting in a high Voc of 1.12V. A PCE over 11% was also achieved with PTB7-Th.


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[6] Qian, D.; Zheng, Z.; Yao, H.; Tress, W.; Hopper, T. R.; Chen, S.; Li, S.; Liu, J.; Chen, S.; Zhang, J.; Liu, X.-K.; Gao, B.; Ouyang, L.; Jin, Y.; Pozina, G.; Buyanova, I. A.; Chen, W. M.; Inganäs, O.; Coropceanu, V.; Bredas, J.-L.; Yan, H.; Hou, J.; Zhang, F.; Bakulin, A. A.; Gao, F., Design rules for minimizing voltage losses in high-efficiency organic solar cells. Nature Materials 2018, 17 (8), 703-709.

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