In this study, the green technology expert network was analyzed with membership information about the green technology community, which is managed by the green technology information portal (GTNet). The purpose of this study was to develop a plan for actively sharing technology information among green technology experts by investigating the network structure among green technologies and then identifying the most important expert group in the green technology field. In addition, the possibility of convergence among green technologies was assessed using betweenness centrality in the green technology network structure, and its necessary technology fields were investigated. The results revealed that there are strong connections among the entire green technologies, and a total of 4 small groups currently exist. Waste reduction technology is playing the most significant role in the entire green technology network structure, and LED lighting-green IT technology has the highest betweenness centrality, resulting in the highest degree of convergence in the green technology field.
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