日益嚴重的溫室效應成為現今不可忽視的問題，為了防止地球均溫持續上升，節能減碳成了生活在地球上一份子的生活態度，因此，各國紛紛投入綠色能源科技的發展，其中以太陽電池技術為最主要的替代能源，太陽能取之不竭用之不盡且不會造成污染的特性，正朝著新一代普及的綠色能源方向邁進。太陽電池的發展，從以矽為材料的第一代太陽光電技術，到第二代薄膜型太陽電池技術，目前第三代有機染料或高分子材料。為太陽電池領域最新興的技術與未來發展的重點，也是本研究所探討的主題。
本研究目的為了解有機太陽電池技術發展現況與未來的發展趨勢，以學術論文中關鍵詞共同出現的情況來預測技術未來可能的發展方向，呈現的結果可成為各研究人員、機構；進行研究與發展的參考。採用的方法為學術論文共詞分析，透過蒐集有機太陽電池相關的論文，進行全文關鍵詞檢索，得到相關的關鍵詞，再經由專家篩選，建立起屬於有機太陽電池技術關鍵詞之共詞網路，最後經由關鍵詞在論文中共同出現的情況，將有機太陽電池領域上的關鍵技術突顯出來。
本研究將有機太陽電池依據群集分析的結果分為三類，分別為染料敏化太陽電池(dye-sensitized solar cell; DSSC)、體異質結合(bulk-heterojunction)、異質結合(heterojunction)與其他。研究結果發現，目前有機太陽電池領域中，染料敏化太陽電池的發展已漸趨成熟，其熱門度也漸漸消退，體異質結合(bulk-heterojunction)技術目前為已發展的階段，熱門程度為三類中最高。

Nowadays, the increment of green house effect has become a big issue; thus, in order to cut down the green house effect, we need to live under the mind-set of reducing the CO2 waste gas and using energy efficiently. Therefore, the development of green energy technology becomes the top priority of government policy, and among the green industry, solar cell is the first and the primary alternative energy of all times due to its propensity of unlimited and cleaning.

The development of solar cell is divided into three generation. The first generation is the PV technology with the material of silicon. The second generation is the thin film solar cell technology. The third generation using organic dye or polymer material is not only the most high-end technology but also the most important development of future solar cell.

This dissertation focusing on the third generation tries to predict the developing trend of organic solar cell. This dissertation using the key-word searching system in academic journal to predict the future trend, and the result of this study can provide suggestion to those researchers and institutions. The research method of this study is Coword Analysis by gathering the solar cell related dissertation. After Using full-text research to find a few key-words then the study ask a few expert to pick up few key-words from those finding key-words so that the study can build up the coword network of organic solar cell . Finally, through the frequency of coword appear in the dissertation could show the critical technology in the solar cell industry.

This research classified the solar cell into three categories-- dye-sensitized solar cell; DSSC, bulk-heterojunction, heterojunction and others. In a nutshell, this research discovered that DSSC is not as popular as it was due to its maturity, and now the bulk-heterojunction steps into the phase of developing which is the most popular among these three categories.

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