دانلود رایگان مقاله انگلیسی فناوری های فتوولتائیک: نقشه برداری از تجزیه و تحلیل های پتنت - الزویر 2018

ABSTRACT

The objective of this article is to identify the technological development of photovoltaic cells by the analysis of patents. The Derwent Innovations Index (DII) database of Thomson Derwent was used for this research. 22,682 patents were obtained. The results indicate that 1) the number of patents deposited on photovoltaic cells grows every year, 2) the main depositor countries are the United States, China, Japan, Germany and South Korea, 3) American and Japanese organizations stand out with the highest number of patent registrations, 4) the main areas of knowledge were Engineering, Instruments and Instrumentation, Energy and Fuels, Chemistry and Polymer Science, 5) the patents on photovoltaic cells are concentrated in the area of semiconductors for the conversion of solar radiation into electric energy, in the area of generators for the direct conversion of light energy into electric energy and in the area of solar panels adapted for roof structures and 6) there is a prominence of deposited patents for polymer-based photovoltaic cell technologies, carbon nanostructures, III-V compounds, cadmium telluride and amorphous silicon cells.

5. Conclusion

This study conducted a patent analysis to mapping the development of photovoltaic technologies. To do so, the Derwent Innovations Index database was used to identify patents. This research concluded that the number of patents deposited on photovoltaic cells grows each year and that the main depositor countries are the United States, China, Japan, Germany and South Korea. The most important institutions / companies were the American and Japanese ones, and the main areas of knowledge were Engineering, Instruments and Instrumentation, Energy and Fuels, Chemistry and Polymer Science.

It was also verified that patents on photovoltaic cells are concentrated in the area of semiconductors for the conversion of solar radiation into electric energy, in the area of generators for the direct conversion of light energy into electric energy and in the area of solar panels adapted for roof structures. There is also a prominence of patents deposited for polymer-based photovoltaic cell technologies, carbon nanostructures, III-V compounds, cadmium telluride and amorphous silicon cells.

Patent analysis of photovoltaic cells has been based on the assumption that a patent is a good example for identify the technological knowledge developed by the community that researches photovoltaic cells. However, not all developers file patents for their inventions. Despite these limitations, patent analysis has still been able to highlight key trends in development of technologies to photovoltaic cells. For future research it is suggested a study of the relationship between the level of patent registration of a country and their degree of industrialization and commercialization of photovoltaic solar cells.