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Ogniwa fotoelektrochemiczne do konwersji energii słonecznej

Radecka M., Trenczek-Zając A.

Automatyka, Elektryka, Zakłócenia

2015

Vol. 6, Nr 4(22)

6-14

Fotoelektroliza wody dzięki absorpcji światła przez półprzewodnik jest uważana za korzystny sposób otrzymywania nośnika energii jakim jest wodór. Proces ten przebiega w ogniwie fotoelektrochemicznym (PEC), składającym się z wodnego roztworu elektrolitu i dwóch elektrod. Praktyczne zastosowania tego procesu wymaga znalezienia materiału na elektrody, które umożliwiają osiągnięcie wysokiej sprawności.

The photoelectrolysis of water–its decomposition into hydrogen and oxygen due to the absorption of light–is regarded as an important and non-conventional future energy source. This process proceeds in the photoelectrochemical cells, PEC, composed from aqueous electrolyte and two electrodes. For the practical application of this process it will be necessary to find an electrode material that yields high energy conversion efficiency.

Tin selenide thin films prepared through combination of chemical precipitation and vacuum evaporation technique

Zainal Z., Nagalingam S., Kassim A., Hussein M. Z., Yunus W. M. M.

Materials Science

2003

Vol. 21, No. 2

225-233

Tin selenide thin films were prepared through combination of chemical precipitation and vacuum evaporation technique. The vacuum deposition was carried out at different quantity of the starting material. The difference in the structural and compositional properties of the deposited films were studied. The films were characterised using various techniques such as x-ray diffractometry, scanning electron microscope and energy dispersive analysis of x-ray. Photoactivity of the samples was studied using linear sweep voltammetry. The films were found to be p-type semiconductors. The optical bandgap energy was found to be indirect and equal to Eg = 1.25 eV.

Long term stability of dye-sensitised solar cells for large area power applications

Kern R., Van der Burg N., Chmiel G., Ferber J., Hasenhindl G., Hinsch A., Kinderman R., Kroon J., Meyer A., Meyer T., Niepmann R., Van Roosmalen J., Schill C., Sommeling P., Spath M., Uhlendorf I.

Opto-Electronics Review

2000

Vol. 8, No. 4

284-288

To be able to commercialize the dye-sesitised solar cell (DSC) technology for large area power applications it needs to be clear what module life-times can be obtained. Therefore, the long term stability of DSC is investigated. Accelerated tests are performed in order to determine the lifetime DSCs. Stability results over 10000 h were obtained with small, individual cells. It is shown that the chemical composition of the cells is very important, even water can be tolerated to some extend. For more sophisticated investigations, DSCs for the stability tests are processed on so-called masterplates : five individual cells on one glass plate. Cells with an efficiency of 5% have been produced. The cell parameters (Isc, Voc, FF, n) varied only by less than 7.5%. Several masterplates with different components were produced and aged. Stability test stands were developed for long term stability testing, allowing 96 masterplates (480 cells) to be aged in parallel. The masterplates are aged under continuous illumination and electrically characterised in-situ. First stability results were obtained with different solvents.