Flat band variation of n-cadmium chalcogenides in aqueous cyanide

Journal Article · Thu May 23 04:00:00 EDT 1996 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/jp9603389· OSTI ID:263204

Licht, S; Peramunage, D ^[1]

---

1. Clark Univ., Worcester, MA (United States)

Flatband potential, V{sub fb}, measurements of n-CdSe in alkaline ferrocyanide electrolytes substantiate trends observed for photoelectrochemical open circuit voltage, V{sub oc}, with dissolved cyanide. Similar trends comprising a negative shift of V{sub fb} and an increase in V{sub oc} with increasing concentration of cyanide are also observed for an n-CdTe alkaline ferrocyanide photoelectrochemical cell, PEC. Modification of an alkaline ferro/ferricyanide electrolyte with KCN, in an n-CdSe or n-CdTe PEC, stabilizes the photocurrent, and increases the V{sub oc} by several hundred milivolts. In an approach to the high cyanide concentration limit, V{sub fb} for both n-CdSe and n-CdTe in alkaline ferrocyanide appraches a single limiting value of -1.2 V vs ferro/ferricyanide. 32 refs., 6 figs., 2 tabs.

• OSTI ID: 263204
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 21 Vol. 100; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
36 MATERIALS SCIENCE
40 CHEMISTRY
ABUNDANCE
CADMIUM SELENIDE SOLAR CELLS
CADMIUM SELENIDES
CADMIUM TELLURIDE SOLAR CELLS
CADMIUM TELLURIDES
CHALCOGENIDES
ELECTRIC POTENTIAL
ELECTROLYTES
FERRICYANIDES
FERROCYANIDES
PHOTOCURRENTS
SOLAR CELLS
SOLAR ENERGY CONVERSION