@article{oai:kanazawa-u.repo.nii.ac.jp:00008491,
 author = {高橋, 光信 and Nakamura, Jun-ichi and Suzuki, Shinji and Takahashi, Kohshin and Yokoe, Chiho and Murata, Kazuhiko},
 issue = {12},
 journal = {Bulletin of the Chemical Society of Japan},
 month = {Jan},
 note = {The energy conversion efficiency of a two-layer organic solar cell consisting of a perylene pigment (PV) and regioregular polythiophene polymer (P3DT) was 0.99% under illumination with simulated solar light (AM 1.5–100 mW cm−2). The photovoltaic mechanism is discussed on the basis of the ionization potential of the component materials. The photoinduced hole-transfer from PV to P3DT quickly occurred at the PV/P3DT interface because of the large free energy change of 1.2 eV, then the subsequent charge separation efficiently proceeded, resulting in a large short-circuit photocurrent of 6.5 mA cm−2. On the other hand, the open-circuit photovoltage was only 0.42 V because the LUMO level of PV is close to the HOMO level of P3DT. The difference between the LUMO and the HOMO can be attributed to the open-circuit photovoltage.},
 pages = {2185--2188},
 title = {The photovoltaic mechanism of a polythiophene/perylene pigment two-layer solar cell},
 volume = {77},
 year = {2004}
}