Photoelectrochemical Cell with Dye Molecules Oriented in Nematic Liquid Crystal |
| N.S. Naser, A. Planner and D. Frąckowiak Institute of Physics, Poznań University of Technology, Piotrowo 3, 60-965 Poznań, Poland |
| Received: February 26, 1997; in final form: May 5, 1997 |
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| A photoelectrochemical cell consisting of two semiconducting electrodes covered by orienting SiOx layers and filled with merocyanine solutions in nematic liquid crystal was constructed. Dye molecules were oriented as a result of the guest-host effect. Generation of photocurrent by two components of polarized light gives different values of photocurrent amplitude but anisotropy of photocurrent is lower than that of absorption in the region of a free base form of dye. It is explained by dominant participation of a protonated form of dye in the photocurrent generation. The last form exhibits a lower degree of orientation than the free base form of dye. |
| DOI: 10.12693/APhysPolA.92.535 PACS numbers: 42.70.Dí, 42.79.Kr, 61.30.Gd |