Dalian University of Technology perovskite solar cell research new progress

YANG Xi-chuan, an associate professor at Dalian University of Technology and Zhang Fuguo, a Ph.D. graduate student at Dalian University of Technology, recently demonstrated low-cost, high-efficiency new perovskite solar cells showing excellent stability and passed the indoor 1000-hour light stability test for industrialization of perovskite solar cells Solved many key problems. Results published in "nano - energy."

Perovskite batteries have the advantages of low cost, simple process (suitable for various industrial technologies, including solution operation, roll-to-roll processing, thermal evaporation, etc.). However, its development also faces severe challenges: the bottleneck of the stability of the natural environment, and the key technical issues such as the toxicity of Pb, environmental pollution and material recycling.

The researchers pioneered the cheap, undoped nanorods of copper phthalocyanine as a hole-selective contact material, replacing the synthesis of difficult, expensive and need to be doped hole transport material, with low-temperature carbon instead of gold as calcium titanium Counter electrode of mine solar cell. It was found that the application of copper phthalocyanine nanorods effectively promoted the separation of charges and inhibited the recombination of electrons. The optimized photoelectric conversion efficiency of this kind of battery was 16.1% Mine solar cells.

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