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The influence of sintering temperatures on solution-processed cadmium telluride(CdTe) nanocrystal films is studied in order to maximize the performance of CdTe/Al Schottky nanocrystal solar cells.The best overall performance of 2.67%efficiency at air mass 1.5 was achieved from devices with CdTe films sintered at 350℃X-ray diffraction,scanning electron microscopy and UV-vis absorption measurements show that the CdTe nanocrystal grains began to grow remarkably well when sintering temperatures increased to 350℃.By analyzing the current-voltage characteristics,we find that the short-circuit current densities of devices increase with sintering temperatures ranging from 200 to 400℃,but,the over-sintered(450℃) treatment induces the shunting of devices.
The influence of sintering temperatures on solution-processed cadmium telluride (CdTe) nanocrystal films is studied in order to maximize the performance of CdTe / Al Schottky nanocrystal solar cells. The best overall performance of 2.67% efficiency at air mass 1.5 was achieved from devices with CdTe films sintered at 350 ° C X-ray diffraction, scanning electron microscopy and UV-vis absorption measurements show that the CdTe nanocrystal grains began to grow remarkably well when the temperature was increased to 350 ° C .By analyzing the current-voltage characteristics, we find that the short-circuit current densities of devices increase with sintering temperatures ranging from 200 to 400 ° C, but, the over-sintered (450 ° C) treatment induces the shunting of devices.