研究目的
To report data on the effect of the light intensity during pre-white-light soaking on the lateral charge collection length for metal mesh transparent electrode based Cu(In,Ga)Se2 solar cells.
研究成果
The lateral collection length of charge carriers in metal mesh transparent electrode based Cu(In,Ga)Se2 solar cells increases with the intensity of pre-white-light soaking, from 15.4 to 23.4 mm as the intensity increases from 0.11 to 1.0 sun. This data is valuable for designing suitable networks for silver nanowire based CIGS thin film solar cells.
研究不足
The study focuses on the effect of light intensity during pre-white-light soaking on the lateral charge collection length, but does not explore other potential factors that could influence the performance of metal mesh transparent electrode based Cu(In,Ga)Se2 solar cells.
The measured device has a structure of Al/Ni/CdS/CIGS/Mo. Al/Ni is disk-shaped, and formed by e-beam evaporation through a shadow mask on the CdS/CIGS/Mo planar stack. The reflectance of the light off the front CdS surface was measured using an UV-Vis spectrometer. Photocurrents were measured from the short-circuited device under light illumination generated by a solar simulator. The intensity of white-light, employed for pre-white-light soaking process, shining the device was controlled by adjusting the device-to-solar simulator distance. The 600 nm-narrow-bandwidth-light, which was employed to determine the lateral collection length of charge carriers, was generated by inserting a 600 nm-band pass filter between the device and the solar simulator. The lateral collection lengths were determined using equation (4) of our previous work [3].
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