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Advanced Materials

Efficient Organic Heterojunction Photovoltaic Cells Based on Triplet Materials


  • The authors acknowledge financial support from the Office of Naval Research (N00014-04-1-0434) and technical discussion with Douglas Sievers, W.-J. Hou, Dr. Gang Li, and Ankita Prakash.


A high-performance organic photovoltaic heterojunction based on the triplet material, 2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphineplatinum(II) (PtOEP), is demonstrated and 2.1 % energy-conversion efficiency obtained (see Figure). As the exciton diffusion length might be extended greatly, triplet materials have great potential for use in organic and polymer solar cells.

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