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At present, most of the main material of solar panels is crystalline silicon, and the crystal itself or the deposited layer on the crystal will be doped with some other metal atoms, which can enhance the conductivity
of the crystal.
The conversion efficiency of crystalline silicon solar cells that have undergone a doping process can exceed 20%, while the efficiency of undoped cells has never exceeded 14%.
An international research team applied a new composite material to simplify the manufacturing steps of silicon solar cells, increasing the photoelectric conversion efficiency of doped-free silicon cells to 19%.
The doping process can improve the efficiency of solar energy conversion, but it will increase the complexity and reduce the performance of semiconductor components, hindering the subsequent manufacturing process
.
The special blends in the new study can eliminate the doping process, and in just 7 simple steps, new materials and simple coating processes can be combined to improve efficiency
.
In this study, the research team coated the side of the solar cell's silicon wafer facing the sun with an ultra-thin molybdenum oxide material, and lithium fluoride on
the back.
The two coatings, which are only a few tens of nanometers thick and both transparent, have complementary electronic structures that make them ideal for use in solar cells
.
Research team member Steven de Wolff said that the team discovered the utility of molybdenum oxides several years ago, and this time using the solar cell manufacturing platform of the Swiss Federal Institute of Technology in Lausanne, when combined with the silicon wafer layer, the molybdenum oxide performed very well, making surprising changes
to the standard process of making crystalline silicon solar cells.
The team hopes that more materials can continue to be tested to see if there are better materials
that improve conversion efficiency.
At present, most of the main material of solar panels is crystalline silicon, and the crystal itself or the deposited layer on the crystal will be doped with some other metal atoms, which can enhance the conductivity
of the crystal.
The conversion efficiency of crystalline silicon solar cells that have undergone a doping process can exceed 20%, while the efficiency of undoped cells has never exceeded 14%.
An international research team applied a new composite material to simplify the manufacturing steps of silicon solar cells, increasing the photoelectric conversion efficiency of doped-free silicon cells to 19%.
The doping process can improve the efficiency of solar energy conversion, but it will increase the complexity and reduce the performance of semiconductor components, hindering the subsequent manufacturing process
.
The special blends in the new study can eliminate the doping process, and in just 7 simple steps, new materials and simple coating processes can be combined to improve efficiency
.
In this study, the research team coated the side of the solar cell's silicon wafer facing the sun with an ultra-thin molybdenum oxide material, and lithium fluoride on
the back.
The two coatings, which are only a few tens of nanometers thick and both transparent, have complementary electronic structures that make them ideal for use in solar cells
.
Research team member Steven de Wolff said that the team discovered the utility of molybdenum oxides several years ago, and this time using the solar cell manufacturing platform of the Swiss Federal Institute of Technology in Lausanne, when combined with the silicon wafer layer, the molybdenum oxide performed very well, making surprising changes
to the standard process of making crystalline silicon solar cells.
The team hopes that more materials can continue to be tested to see if there are better materials
that improve conversion efficiency.
