Berlin 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 13: Organic Electronics and Photovoltaics - Hybrid and Organic Layer Systems
CPP 13.7: Vortrag
Montag, 12. März 2018, 16:30–16:45, C 243
Photoswitchable Sn-Cyt c Solid-State Devices — Satoshi Nakamaru2, William Ford1, Yoshio Goto2, and •Florian von Wrochem1 — 1Sony Europe Ltd., Materials Science Laboratory, Hedelfinger Strasse 61, D-70327 Stuttgart, Germany — 2Advanced Materials Laboratories, Sony Corporation, Atsugi Technology Center No.2, 4-16-1 Okata, Atsugi, Kanagawa, 243-0021, Japan
Electron transfer across proteins plays an important role in many biological processes, including those relevant for the conversion of solar photons to chemical energy. Previous studies demonstrated the generation of photocurrents upon light irradiation in a number of photoactive proteins, such as photosystem I or bacteriorhodopsin. Here, we show that Sn-cyt c layers act as reversible and highly efficient photo-electrochemical switches upon integration into large area solid state junctions. Photocurrents are observed both in the Soret-band (lambda = 405 nm) and in the Q-band (lambda = 535 nm), with current on/off ratios reaching values of up to 25. The underlying modulation in charge transfer rate is attributed to a hole-transport channel, created by the photoexcitation of the Sn-porphyrin.