Naslov
Conversion properties of polycrystalline CdS photoanodes in elctrolytes of variable Fermi levels

Autori
Gotovac, Vesna ; Krpan-Lisica, Draga ; Aljinović, Ljiljana

Izvornik
Journal of the Serbian Chemical Society (0352-5139) 51 (1986); 327-338

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
photoelectrochemical cell ; polyrystalline semiconductor ; CdS ; cyclic voltammogram ; conversion efficiency

Sažetak
The conversion properties of photoelectrochemical cells (PEC) with thin low cost polyrystalline semiconductor CdS in conjunction with electrolyte containing redox couples were studied. Data concerning performance and stability of the CdS-electrolyte interfaces were obtained from cyclic voltammograms and measurements of the power characteristics during one month. A "white light" conversion efficiency greater than 1 % during a few days of operation was obtained with a K3Fe(CN)6/K4Fe(CN)6 redox system, but for a little more stable cell with CdS film anodes in a Na2S/S electrolyte an efficiency of 0, 1 % was found. The less efficient (0, 05 %) PEC with a Q/H2Q redox couple showed the unchanged conversion properties for longer periods of time. The changes of Uoc with redox electrolyte Fermi levels were measured and briefly discussed in this paper. From the analysis of the photocurrent vs. potential characteristics for an electrolyte with a Q/H2Q-CdS junction, representative of those investigated, the value of the flat band potential was determined.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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