Characterisation of multicrystalline solar cells


Outdoor testing of solar cells by I-V and P-V


The evaluation and assessment of the performance of photovoltaic (PV) cells in terms of measurable parameters requires the measurement of the current as a function of voltage, temperature, intensity, wind speed and spectrum. Mo st noticeable of all these parameters is the PV conversion efficiency ?, defined as the maximum electrical power Pmax produced by the PV cell divided by the incident photon power P in which is measured with respect to standard test conditions (STC). These conditions refer to the spectrum (AM 1.5), solar radiation intensity (1000 Wm-2), cell temperature (25 ±2oC) and wind speed (2 mph). Tests under STC are carried out in the laboratory at a controlled environment. There have been several studies that analyze uncertainties in the laboratory measurement of solar cell efficiencies using different solar simulators and their transference to operational situations. Our preliminary results demonstratethat the short circuit current (ISC) of the solar cell decreases when irradiance is less than 1000 Wm-2 irrespective of the working temperature of the cell.


Gonzalez, M.C. and Carroll, J.J. (1994), Solar Cells effici

ency Variations with Varying Atmospheric Conditions, Solar Energy, vol. 53, no. 5, pp. 395-402.

Shaltout, M.A.M, Mahrous, A.M., Ghettas, A.E., and Fattah, Y.H. (1995), Photovoltaic Performance under Real Desert Conditions near Cairo, Renewable Energy, vol. 6, no. 5-6, pp. 533-536.

Hirata, Y. and Tani, T. (1995), Output Variation of Photovoltaic Modules with Environmental Factors-I, The Effect of Spectral Solar Radiation on Photovoltaic Module Output. Solar Energy, vol. 55, no. 6, pp. 463-468.

Al-Sabounchi, A.M. (1998), Effect of Ambient Temperature on the Demanded Energy of Solar Cells at Different Inclinations. Renewable Energy, vol. 14, no. 1-4, pp. 149-155.

Hirata, Y., Inasaka, T., and Tani, T. (1998), Output Variation of Photovoltaic Modules with Environmental Factors-II: Seasonal Varia

tion, Solar Energy, vol. 63, no. 3, pp. 185-189.

Berman, D., Faiman, D., and Farhi, B. (1999), Sinusoidal Spectral Correction for High Precision Outdoor Module Chract

erisation. Solar Energy Materials & Solar Cells, vol. 58, pp. 253-264.

Keogh, W.M. and Blakers, A.W. (2004), Accurate Merasurement, Using Natural Sunlight, of Silicon Solar cells, Prg. Photo volt: Res. Appl. vol. 12, pp. 1-19.

Kazmerski, L.L. (1997), Photovoltaics: Review of Cell and Module Technologies. Renewable and Sustainable Energy Reviews, vol. 1, no. 1-2, pp. 71-170.

Lorenzo, E. (1994), Solar Electricity Engineering of Photovoltaic Systems, Institute of Solar Energy Polytechnic University of Ma

drid, University Press: Spain.

Malik, A.Q. and Salmi Jan Bin Haji Damit (2003), Outdoor Testing of Single Crystal Silicon Solar Cells, Renewable Energy, vol. 28, no. 9,pp. 1433-1445.

Malik, A.Q., Joanne Lee Siew Peng, Sarisa vinarinawatie Shahrani Muhammad, Tan Kha Sheng, and Lim Chee Ming, Outdoor Measurements of Photovoltaic Solar Cells, Published, In: Technical Digest of the 14th International Photovoltaic Science and Engineering Conference (PVSEC-14), Bangkok, Thailand, 2004, ISBN No. 974-91703-9-9, vol. 2, pp. 803-804.

Sayigh, A.A.M. (1991), Generating Electricity from the Sun. Renewable Energy Series. Pergamon Press: Oxford, U.K.

Gonzalez, M.C. and Carroll, J.J. (1994), Solar Cells Effici

ency Variations with Varying Atmospheric Conditions. Solar Energy

, vol. 53, no. 5, pp. 395-402.

Green, M.A. (2003), General Temperature Dependence of Solar Cell Performance and Implications for Device Modelling, Prog. Photovolt: Res. Appl. vol. 11, pp. 333-340.

Raziemska, E. and Klugmann, E. (2002), Thermally Affected Parameters of the Current-Volatge Chracteristics of Silicon Photocell. Energy Conversion & Management, pp. 1889-1900.

Dyk, E.E.V., Scott, B.J., Meyer, E.L., and Letch, A.W.R. (2000), Temperature Depen-dence of Performance of Crystalline Silicon P hotovoltaic Modules, South African Journal of Science, vol. 96, pp. 198-200.

Mattei, M., Notton, G., Cristofari, C., Muselli, M., and Poggi, P. (2006), Calculation of the Polycrystalline PV Module Temperature using a Simple Method of Energy Balance, Renewable Energy, vol. 31, pp. 553-567.

Malik, A.Q., Lim Chee Ming, and Tan Kha Sheng (2006), The Effect of Temperature on the Power Output of Photovoltaic Solar Cells, Accepted for presentation at World Renewable Energy Congress-IX, 19-25 August, Florence, Italy.


Download data is not yet available.