August 31, by the State Grid Gansu Electric Science and Technology and Datang Gansu Power Co., Ltd. new energy branch of the demonstration application of chalcogenide solar cells in Gansu Wuwei solar energy science and technology demonstration power station successfully connected to the grid, is the country's first semi-transparent chalcogenide solar cells grid-connected power generation project.

Chalcogenide solar cells are solar cells that utilize chalcogenide-type organic metal halide semiconductors as light-absorbing materials, which have the advantages of high photovoltaic conversion efficiency, low manufacturing cost, good low-light effect, low temperature coefficient, etc., and are the most promising new generation of solar cells.

In the research of this project, the State Grid Gansu Electricity Academy of Sciences “Dr. Electric” innovation team using photolithography technology on the active layer of chalcogenide graphical processing, the standard chalcogenide solar cells into semi-transparent chalcogenide solar cells. State Grid Gansu Electricity Academy of Sciences is responsible for the project research and development of the person in charge of Chen Honggang said: “We through precise control of the exposure time and depth and other parameters, can be formed in the chalcocite film on the specific graphic structure, such as grid lines, dot matrix, etc. These graphic structures help to optimize the light in the cell. These graphic structures help optimize the propagation path of light inside the cell and improve the light absorption efficiency, thus enhancing the photoelectric conversion performance of the cell.”

Unlike the ideal conditions in the lab, the outdoor environment is complex and variable, including light intensity, temperature, humidity, wind speed, dust accumulation, and many other factors that can have an impact on the performance of solar cells. After the success of the project grid, the State Grid Gansu Electricity Academy of Sciences “Dr. Electric” innovation team will be in outdoor conditions to verify the performance of translucent chalcogenide solar cells, through the examination of the battery's photoelectric conversion efficiency, stability, durability and adaptability to extreme climatic conditions, in-depth understanding of the battery's advantages and deficiencies in practical applications, and then to address the issues of technical and technological development. Shortcomings, and then for the problem of technical improvement and innovation.

According to the introduction, the State Grid Gansu Electricity Academy of Sciences “Dr. Electric” innovation team will be committed to improving the stability of the battery, reduce the manufacturing cost of the battery and optimize the production process, in order to meet the needs of different application scenarios. At the same time, actively explore and energy storage, smart grid and other technology integration and application, to help form a more complete new energy system, promote low-carbon energy transition. (Date: 2024/9/3 Source: PV Modules & BIPV)