EFFECT OF HEAT TREATMENT IN PRESENCE OF CdCl2 ON THE PHYSICAL PROPERTIES OF pCdTe/nCdS HETEROJUNCTION SOLAR CELLS

Amjad Al QASSEM

Abstract


 The article is a comprehensive study of the effect of heat treatment in presence of a cadmium chloride (CdCl2) on the physical properties of pCdTe/nCdS solar cells. Heat treatment process plays a key role in enhancing the pCdTe/nCdS hetero-structure photosensitivity, thus improving the performance of solar cells based on them. This article outlines the changes in the structural characteristics and photoelectric properties of such solar cells before and after heat treatment process. The two most popular methods of the heat treatment process based on cadmium chloride are also discussed. One may consider the CdCl2 heat treatment process as one of the very important stages of preparing CdTe/CdO/CdS solar cells, which improves the performance of these cells made in laboratories of the State University of Moldova.

INFLUENȚA TRATĂRII TERMICE ÎN PREZENŢA CLORURII DE CADMIU (CdCl2) ASUPRA PROPRIE­TĂ­ŢILOR FIZICE ALE CELULELOR SOLARE CU HETERONCȚIUNEA pCdTe/nCdS

 

Prezentăm un studiu cuprinzător al efectului tratării termice în prezenţa clorurii de cadmiu (CdCl2) asupra proprie­tă­ţilor fizice ale celulelor solare pCdTe/nCdS. Procesul de tratare termică joacă un rol-cheie în ameliorarea fotosensibilităţii heterostructurii pCdTe/nCdS, îmbunătăţind în aşa mod performanţa celulelor solare bazate pe ele. În articol sunt con­tu­rate schimbările în caracteristicile structurale şi proprietăţile fotoelectrice ale acestor celule solare până la şi după pro­cesul de tratare termică. De asemenea, sunt abordate cele mai răspândite metode de tratare termică bazate pe clorura de cadmiu. Tratarea termică în CdCl2 poate fi considerată o etapă foarte importantă în prepararea celulelor solare CdTe/CdO/CdS, care îmbunătăţeşte performanţa acestor celule fabricate în laboratoarele Universităţii de Stat din Moldova.


Keywords


Heterojunction, Solar cell, Chloride heat treatment process, Cadmium Chloride, Cadmium Telluride, Cadmium Sulfide.

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References


GREEN, M.A., EMERY, K., HISHIKAWA, Y., WARTA, W., DUNLOP, E.D. Solar cell efficiency tables (version 41). In: Prog. Photovoltaics Res. Appl. 2013, no21, p.1-11.

SZE, S. Physics of Semiconductor Devices, 2nd edn. Wiley, New York, 1981, p.392.

MORALES-ACEVEDO, A. In: Sol. Energy Mater. Sol. Cells, 2006, vol.90, p.678-685.

ENR´IQUEZ, J.P. and MATHEW, X. Anneal induced recrystallization of CdTe filmselectrodeposited on stainless steel foil: The effect of CdCl2. In: J. Mater. Sci.: Mater. Electron, 2005, vol.16, p.617-621.

HUNGER, R., LEBEDEV, M.V., SAKURAI, K., SCHULMEYER, T., MAYER, T.H., KLEIN, A., NIKI, S., JAEGERMANN, W. Junction formation of CuInSe2 with CdS: A comparative study of “dry” and “wet” interfaces. In: Thin Solid Films, 2007, vol.515, p.6112-6118.

KHRYPUNOV, S. Structural mechanisms of optimization of the photoelectric properties of CdS/CdTe thin-film heterostructures. In: Semiconductors, 2005, no39, p.1224-1228.

DUROSE, K., EDWARDS, P.R., HOLIDAY, D.P. Materials aspects of CdTe/CdS solar cells. In: J. Cryst. Growth, 1999, vol.197, p.733-742.

EDWARDS, P.R., GALLOWAY, S.A. DUROSE, K. EBIC and luminescence mapping of CdTerCdS solar cells. In: Thin Solid Films, 2000, vol.372, p.284-291.

MOUTINHO, H.R., ALBIN, D., YAN, Y., DHERE, R.G., LI, X., PERKINS, C., JIANG, C.S., TO, B., Al-JASSIM, M.M. Deposition and properties of CBD and CSS CdS thin films for solar cell application. In: Thin Solid Films, 2003, vol.436, p.175-180.

DHERE, R., WU, X., ALBIN, D., PERKINS, C., MOUTINHO, H. and GESSERT, T. Formation of CdSxTe1-x alloys and Their Correlation to the Properties of CdS/CdTe Thin-Film Solar Cells. In: Proceedings of the 29th IEEE Photovoltaic Specialists Conference, New Orleans, LA; May 20-24/ 2002 (5 pages).

MOUTINHO, H.R., Al-JASSIM, M.M., LEVI, D.H., DIPPO, P.C. and KAZMERSKI, L.L. Effects of CdCl2 treatment on the recrystallization and electrooptical properties of CdTe thin films. In: J. Vac. Sci. Technol. A 16, 1998, p.1251-1257.


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