2)Study the I-V character of SPC A 源 (a) (b) Figure 9 Circuit for measuring the I-V curve (1)Rotate the polarizer to maximize the illumination (2)Measure the non-bias I-V curve using the circuit in Fig.9(a).At least 12 data points are needed including the open-circuit voltage. (3)Keep the illumination constant,measure the I-V curve under reverse bias condition according to Fig.9(b).At least 12 data points are needed.(<5V) (4)Replace the resistance by the short circuit wire and measure the short circuit current. (5)Change the illumination by rotation the polarizer,repeat(1)to(4).Polarizer angle is 15,30 and 45 degrees. 3)Spectral response of SPC Study the response of SPV to different wavelength. 2.Solar Cell 1)Build a circuit on the wiring board using all the components we supplied. 2)Measure the I-V curve of solar cells under different conditions: (1)the distance between light source and solar cell is 60 cm; (2)the distance between light source and solar cell is 80 cm; (3)the distance between light source and solar cell is 80 cm and two solar cells connect in series: (4)the distance between light source and solar cell is 80 cm and two solar cells connect in parallel; 3)Make data plot using computer or coordinate paper: (1)Solar cell's I-V curve; (2)Solar cell's output power P versus its load voltage V. (3)Determine the short-circuit current Ise,open-circuit voltage Voc,maximum power Pm. optimum operating current /m and voltage Vm and load resistance Rm.filling factor FF List all the data in a table to compare. -8-- 8 - 2) Study the I-V character of SPC (1)Rotate the polarizer to maximize the illumination (2)Measure the non-bias I-V curve using the circuit in Fig. 9(a). At least 12 data points are needed including the open-circuit voltage. (3)Keep the illumination constant, measure the I-V curve under reverse bias condition according to Fig. 9(b). At least 12 data points are needed. (<5V) (4)Replace the resistance by the short circuit wire and measure the short circuit current. (5)Change the illumination by rotation the polarizer, repeat (1) to (4). Polarizer angle is 15, 30 and 45 degrees. 3) Spectral response of SPC Study the response of SPV to different wavelength. 2. Solar Cell 1) Build a circuit on the wiring board using all the components we supplied. 2) Measure the I-V curve of solar cells under different conditions: (1) the distance between light source and solar cell is 60 cm; (2) the distance between light source and solar cell is 80 cm; (3) the distance between light source and solar cell is 80 cm and two solar cells connect in series; (4) the distance between light source and solar cell is 80 cm and two solar cells connect in parallel; 3) Make data plot using computer or coordinate paper: (1) Solar cell’s I-V curve; (2) Solar cell’s output power P versus its load voltage V. (3) Determine the short-circuit current Isc, open-circuit voltage Voc, maximum power Pm, optimum operating current Im and voltage Vm and load resistance Rm, filling factor FF. List all the data in a table to compare. （a） (b) Figure 9 Circuit for measuring the I-V curve