 |
A research team at the University of California, Santa Barbara, claimed that small molecule research based on organic photovoltaic technology has achieved a photoelectric conversion efficiency of 6.7%. Although this is far from the conversion efficiency of crystalline silicon photovoltaic cells, such as Sunpower's Maxeon solar cell conversion efficiency has reached 22.4%, but this is not a small feat, after all, this only started a year.
The study was jointly conducted by university professors Alan Heeger and Guillermo Bazan. Allen Hague has won the Nobel Prize in chemistry. They developed a small molecule that can be stored in a solution at room temperature.
Bassan said that the significance of using solution storage lies in its low cost. In solution, photovoltaic materials can be used for a variety of applications by printing. For example, like a printed book and a newspaper, this is a very standard film deposition method. According to MIT's technical report, most organic photovoltaics are made of polymers. This is because the polymer can form long chains and bind to a stable film. However, it is very difficult for small molecules to achieve such results because they form a stable planar film. Small molecules can be deposited using meteorological methods, which is also more expensive.
Bassan said there are doubts about whether or not small molecules can be obtained from solution. However, it is the first time that this level of efficiency conversion can be achieved. In principle, this small molecule binds to fullerene molecules. The small molecule's charge transfers to fullerene, generating electricity. "This is the old-fashioned standard organic chemistry," said Bassang. "But the nanoscale distribution of the thin film deposition phase must be precise. To get the correct nanoscale morphology, this is precisely its complexity. In the past, we encountered a lot of bottlenecks. It should be much easier now.†Looking to the future, they hope that the efficiency of the next step can reach about 9%.
4014 Led Chip,4014 White Color Led Chip,White Color Led Chip,4014 Smd Led Chip
Shenzhen Huangtai Photoelectric Co.,Ltd. , https://www.huangtailightstrip.com