Gamry Dye Solar Cell Testing Kit – Setup for characterising dye-sensitised solar cells without a bipotentiostat system

Product Description

Der Assembly for the characterisation of dye solar cells consists of a miniaturised optical bench for accommodating the LED of selected wavelength, a collimator–kit), a universal mounting for dye solar cells and a dummy cell (photodiode) to determine the optical power of the LED used as a function of the current used. To do this, the maximum current (ISC) of the photodiodeat the short-circuit potential (ESC = 0) is recorded under galvanostatic excitation of the LED. This provides the optical power of the LED at the representative focal point of the dye-sensitised solar cell for each adjustable current (max. 1000 mA), which is important for the subsequent calculation of the efficiency of the dye-sensitised solar cell. A dye-sensitised solar cell produces electricity when it is irradiated with light. 

Depending on the intensity of the irradiated light, it also strongly depends on the cell potential at which the current is produced. Therefore, potential curves are recorded between the output (short-circuit potential) and end potential (open-circuit potential) of the semiconductor and the resulting current is measured. After each measurement of sufficient reproducibility, the irradiated light intensity is gradually increased up to the maximum optical power of the LED. As a result, these curves provide information on the maximum available current output of a solar cell (short-circuit potential), the maximum operating voltage of the solar cell (open-circuit potential), the maximum available power output, the fill factor as a quotient of the maximum available power output ggü. the theoretical power output and the efficiency of the solar cell. 

With the set-up for characterising dye-sensitised solar cells when irradiated with constant light intensity, the dye-sensitised solar cell can be characterised by controlling the potential in a working range according to the previous current-voltage curve with a superimposed current-voltage curve.voltage curve with a superimposed and modulated AC signal impedance spectrometrically. The impedance spectrum obtained can be used to match the porous interface structures with the dye contained therein by means of equivalent circuit diagrams (transmission lines “Unified) and provides information on power losses due to limiting diffusion processes. Finally, the possible uses of the set-up for the characterisation of dye solar cells are rounded off by the two intensity-modulated methods IMPS (light intensity modulation at short-circuit potential) and IMVS (light intensity modulation at open-circuit potential). 

At this point, the modulated AC signal is not superimposed on the potential of the operating range, but the dye solar cell is driven to the short-circuit potential (IMPS) or open-circuit potential (IMVS), the light source is supplied with a constant DC signal and a modulated AC signal is superimposed. The resulting current response of this modulated light intensity is measured in the current response of the dye solar cells at the respective potential under investigation. In this way, time constants can be determined to elucidate various processes such as the accumulationof charges, diffusion and lifetime or recombination rates of the electrons in the dye solar cell. 

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Specifications

SYSTEM



Dimensions: 30 cm (L) x 10 cm (W) x 20 cm (H)

Weight: 3 kg



CONFIGURATION



LED (M470L3; THORLABS)

Wavelength 470 nm

Power (typical) 710 mW (1000 mA)

Voltage 3.2 V

Peak width (FWHM) 25 nm

Lifespan 100,000 hours



LED (M530L3; THORLABS)

Wavelength 530 nm

Power (typical) 370 mW (1000 mA)

Voltage 3.2 V

Peak width (FWHM) 33 nm

Lifespan 100,000 hours



LED (M590L3; THORLABS)

Wavelength 590 nm

Power (typical) 170 mW (1000 mA)

Voltage 2.2 V

Peak width (FWHM) 18 nm

Lifespan 100,000 hours



LED (M617L3; THORLABS)

Wavelength 617 nm

Power (typical) 650 mW (1000 mA)

Voltage 2.2 V

Peak width (FWHM) 18 nm

Lifespan 100,000 hours



LED (M625L3; THORLABS)



Wavelength 625 nm

Power (typical) 770 mW (1000 mA)

Voltage 2.2 V

Peak width (FWHM) 18 nm

Lifespan 100,000 hours



LED (M940L3; THORLABS)

Wavelength 940 nm

Power (typical) 1000 mW (1000 mA)

Voltage 2.75 V

Peak width (FWHM) 37 nm

Lifespan 100,000 hours

Options and Accessories

• Interface 1000 Bipotentiostat

• Interface 1010 Bipotentiostat

• Interface 1000/1010 Bipotentiostat Synchronisation Cable 

 • LED Collimator Kit

 • Blue (470 nm) LED assembly

 • Green (530 nm) LED assembly

 • Amber (590 nm) LED assembly

 • Orange (617 nm) LED assembly

• Red (625 nm) LED assembly

 • NIR (940 nm) LED assembly

 • Warm White LED Assembly (3,500K)

 • Cold White LED Assembly (6,500K)

Applications