成果報告書詳細
管理番号20120000000542
タイトル*平成23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2012/6/20
報告書年度2011 - 2011
委託先名三菱樹脂株式会社
プロジェクト番号P0715
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:
[記載項目]
1. 共同研究の内容及び成果等
太陽光発電システムの普及にはモジュールコストの低減が不可欠である。その中で今後普及が見込める薄膜シリコンやCIS 系の太陽電池では製造プロセスの製造コスト比率が大きくその低減が望まれている。
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.
The following results were achieved in FY2011 for each development themes.
1.Development of super-high gas barrier film with Cat-CVD layers and its producing technology.
In order to achieve high gas barrier property, multi-layer films were deposited by using Cat-CVD and vacuum evaporation unit. This multi-layer sample showed high moisture barrier property (<2.0x10-4 g/m2/day), which was measured by a differential pressure method. In addition, by developing the structure of the laminated product including above multi-layer sample, we succeed to achieve the high gas barrier film whose WVTR is 10-5g/m2/day, which is below the measurement limit of the machine of the differential pressure method.
And we have developed a method of forming Cat-CVD films without using NH3 gas as part of the development of production technology. We have constructed a Cat-CVD chamber with a plasma system by which N2 molecules are decomposed. We have confirmed the deposition of SiON films by this technique, and the films deposited by the new technique show gas barrier properties comparable those deposited in a conventional Cat-CVD system by using NH3.
2. Development of weather-resistant back sheet and front sheet.
In order to establish the basic materials of durable substrate films, adhesives, coating materials, for front sheet and back sheet, we investigated the following items
2-1. Selection of Materials
1) Fluor-resins with high resistance to heat and humidity and UV light
Surface treatment for good adhesion
2) Adhesives to barrier film, low physical and chemical stresses to barrier
3) Plastic films with appropriate thickness and hardness, low shrinkage
4) Primer coat with good adhesion to encapsulant, establishment of coating condition
2-2. Durability Tests, 85oC/85% and Xenon weather meter
Front sheets showed good durability, for example <20% decrease of tensile strength after DH2000h.
As a result, we established basic structures of front sheet and back sheet and we are planning to improvement of performance of front sheets with combination of processing techniques and super-high gas barrier films for further durability PV protection sheets.
3. Development of high weather and heat-resistant base film
For further improvement of high weather and heat-resistance for a plastic film using a polymer composite, we tried to add an inorganic component into a polymer composite film. By optimizing the dispersion and the compatibility among high heat-resistant components and polymer materials, a heat-stabilized film has been realized. As a result, the modified composite film, which was kept at 200C and for 10 min, showed below 0.1% of thermal shrinkage and below 20 ppm/C of thermal expansion coefficient.
In addition, we tried to produce this modified composite film by our existed production machine. The process of this current production machine was not suitable for the modified composite film. However, the heat-resistant property was improved by using an additional off-line process.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る