基于专利共现的全球太阳能技术网络及关键技术演进分析

Mapping the Evolution of Technology Network and Identifying Key Technologies in the Field of Solar Energy Technology via Co-occurrence Analysis

太阳能作为战略性新兴产业受到各国政府的普遍关注。运用专利技术领域共类分析、主题词共现分析和社会网络分析方法，绘制太阳能技术网络的演进并识别不同阶段的关键技术，将对我国太阳能产业技术的发展具有重要的辅助决策作用。对1971～2010年40年间全球太阳能专利数据分析结果显示，随着时间的推移，“太阳能发电系统与LED照明”技术子网络规模越来越大，并出现了新兴的技术子网络；关键技术领域与关键技术主题也越来越多地集中于“太阳能发电系统与LED照明”技术子网络中；在太阳能技术发展的第一阶段，共性技术特征比较明显，随着时间的推移，共性技术特征开始变弱。本研究是在一个比较宏观的层面上进行的，期望下一步做一些更深入的、微观层面的研究。

As an emerging and strategic industry, solar energy is heavyly emphasized by some national governments. This paper aims to map the evolution of technology network in the field of solar energy technology worldwide during 1971-2010 by using patent co-occurrence analysis and social network analysis, and identify key technologies by employing the indicator of betweenness centrality in different stages. Results show that the scale of technology sub-network of solar power generation and LED lighting in different stages becomes bigger, and emerging sub-networks come into being. More and more technology fields and technology topics are gathering in the sub-network of solar power generation and LED lighting, and more and more key technology fields and key technology topics are also gathering in this sub- network. The characteristics of generic technology is weaker in the second stage. This study is still on a comparable cacro- level, and much deep investigations would be done in the following studies at a micro-level.