成果報告書詳細
管理番号20130000000652
タイトル*平成24年度中間年報 太陽エネルギー技術研究開発 太陽光発電システム次世代高性能技術の開発 超ハイガスバリア太陽電池部材の研究開発
公開日2014/5/9
報告書年度2012 - 2012
委託先名三菱樹脂株式会社
プロジェクト番号P07015
部署名新エネルギー部
和文要約
英文要約Title: Research and development of Solar energy technology / Development of next generation high efficient solar photovoltaic system / Research and development of super-high gas barrier materials for solar battery. (FY2010-2014)FY2012 Annual Report

The following results were achieved in FY2012 for each development themes.
1. Development of super-high gas barrier film with Cat-CVD layers and its producing technology.To improve the gas barrier property, we produced the multi-layer films by using Cat-CVD unit that was put on the R&D multi- chambers type vacuum deposition machine and evaluated these sample films. By developing the stress control technique of Cat-CVD layers, we could increase the critical thickness of the barrier layer and the critical number of layers of multi barrier layer. Appling above technique and other developing deposition techniques and optimizing deposition conditions, we could success to produce the super-high gas barrier films, of which the WVTR were below 4x10-6 g/m2/day. This result satisfied the development target by the end of FY2012. Furthermore we installed a large scale Cat-CVD unit in our actual production machine and stated the experiment of producing wide barrier films by roll to roll process.
2. Development of weather-resistant back sheet and front sheet.
To develop the high performance weather-resistant front sheets, we evaluated the materials constituting the PV front sheets as the plastic films, the adhesives and the coating materials. And we also experimented to optimize the front sheet constructing procedures and conditions by those materials. Especially we evaluated some kind of the Fluor-resins films, and the front sheets with Fluor-resins films, because the Fluor-resins are superior in the weather-resistant property. In the results of the most appropriate structure of the front sheet, we could achieve the high weather-resistant front sheets whose optical property, tensile strength and lamination strength could be kept with low degradation rates as less than 30% after 3000hr in 85oC/85% condition and 3000hr in Xenon weather meter. This result satisfied the development target by the end of FY2012. Additionally we could develop the front sheets structure that could keep high laminate strength between the front sheet and the encapsulant on the PV cell even after 3000hr in 85oC/85% condition and 3000hr in Xenon weather meter.
3. Development of high weather and high heat-resistant base film
We have completed the development target by the end of FY2012, witch each thermal expansion coefficient and thermal shrinkage of the plastic film by 200C is below 20 ppm/C and 0.1%, within FY2011. In this FY2012, we advanced development of producing process and conditions of this high heat-resistant film by our roll to roll production machine. At primary experiments, the heat-resistant properties of the sample films have been insufficient. It was expected that the process time for heat-resistant treatment was short, because the running speed of the production machine was high. We reconsidered the producing process and conditions, and then we could achieve almost same heat-resistant property to RD process samples, even by the production machine.
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