PEC studies on Sr2TiO4 and Sr3Ti2O7, two members of the homologous series, Srn+1TinO3n+1, which are chemically related to but structurally different from SrTiO3 ana contain TiO6 photoactive centres, have been carried out and the results compared to the behaviour of SrTiO3. Photopotential, photocurrent vs. applied voltage and wavelength data indicate that Sr2TiO4, and Sr3Ti2O7 possess large and indirect band gaps (3.25 and 3.22 eV) similar to SrTiO3 (Eg = 3.20 eV) but have slightly lower flat band potentials than SrTiO3 and hence need slightly larger bias voltages for operation in the PAE mode. Long term stability studies under illumination indicate that while Sr3Ti2O7 is almost as stable as SrTiO3, Sr2TiO4 shows degradation. © 1986.

Gopalaswamiengar Aravamudan

Band structure

CHEMICAL REACTIONS - Photochemical Reactions

ELECTROLYTIC CELLS - ELECTRODES

PHOTOVOLTAIC EFFECTS - MEASUREMENTS

FLAT BAND POTENTIALS

INDIRECT BAND GAPS

Mixed Oxides

PHOTOELECTROCHEMICAL STUDIES

Semiconductor materials

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Photoelectrochehical studies on the mixed oxides,SrTiO3,Sr2TiO4 and Sr3Ti2O7

Materials Chemistry and Physics

PEC behavior of the tetrahedral metal-cluster chalcogenides, GaMo4S8 and ZnMo2Re2S8 in the polycrystalline form have been examined. The photoresponse behavior is attributed to the Mo d-d transition with n-type behavior. These compounds are found to give photoresponse in aq. acidic and alkaline solutions and also in I2 I- and Fe(CN)64- 3- redox electrolytes. Detailed photoresponse behavior and quantum efficiency measurements have been made. But the PEC properties of GaMo4S8 and ZnMo2Re2S8 are not found to be very encouraging. © 1989.

Materials Research Bulletin

Photoelectrochemical studies on Mo-cluster compounds, GaMo4S8 and ZnMo2Re2S8

PEC studies on the single crystals of the metal-cluster oxide compounds. A2Mo3O8 (A = Zn, Mg, Fe), and polycrystalline LiYMo3O8 are reported. The photoresponse behaviour is attributed to the Mo d-d transition. The photopotential, the photocurrent vs applied voltage and the wavelength data indicate that n-Zn2Mo3O8 is stable and possesses a small and indirect band gap of 1·55 eV and a direct band gap of 1·9 eV. With change in A ions in A2Mo3O8, there is no significant change in the PEC properties. LiYMo3O8 is found to be of p-type. PEC studies show that excepting for poor electronic conductivity, A2Mo3O8 possesses all the requisitie characteristics of an ideal photoanode for PAE of water for trapping solar energy. © 1988 the Indian Academy of Sciences.

Fulltext

Bulletin of Materials Science

Photoelectrochemical properties of metal-cluster oxide compounds, A2Mo3O8 and (LiY)Mo3O8

PEC behavior of p-CdCr2Se4 has been studied in an aq. V2+/3+ system with a carbon anode. Potentiostatic i-V, photocurrent vs λ, electrode capacitance and power characteristics of the cell have been measured. An η of ∼1% has been obtained. © 1987.

Solar Energy Materials

Photoelectrochemical studies on p-CdCr2Se4

A brief survey of the historical development of a photoelectrochemical solar cell is given. The principle and future of solar chargeable battery is compared with a wet and a dry type photovoltaic cell. A solar chargeable battery, with or without a membrane and with an aqueous solution or with solid-state electrolytes is discussed. A new unique type of configuration "Sharon-Schottky" junction solar cell is described which can be used either as a charger for any secondary batteries or could be used for photoelectrolysis of water. All these configurations and their relative merits are discussed. A review on the various semiconductors and types of solar chargeable batteries is made. Finally, a conclusion is drawn for future direction of research for developing an economically viable photoelectrochemical (PEC) solar cell based on either the principle of a solar charger (to charge a NiCd battery or lead-acid battery) and/or solar chargeable battery with or without without a membrane. Some new innovative ideas for the preparation of materials is discussed. The entire discussion is geared towards answering a relevant question: what has gone wrong to result in the stagnation and failure in commercialization of a PEC based solar cell? © 1991.

Electrochimica Acta

Solar rechargeable battery-principle and materials

The Grants Register 2018

University of Paris-Saclay

Science-Business eXchange

IL-1β; IL-1 receptor; IL-17A

Pure and Applied Chemistry

Thermodynamics and kinetics associated with semiconductor-based photoelectrochemical cells for the conversion of light to chemical energy

Photoelectrochemical properties of MgTiO3 and other titanates with the ilmenite structure

Journal of Solid State Chemistry

Crystal chemistry and magnetic properties of layered metal oxides possessing the K2NiF4 or related structures

Journal	Materials Chemistry and Physics
ISSN	02540584
Open Access	No