JP5448904B2 - 電極構造体の製造方法および太陽電池 - Google Patents
電極構造体の製造方法および太陽電池 Download PDFInfo
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- JP5448904B2 JP5448904B2 JP2010030697A JP2010030697A JP5448904B2 JP 5448904 B2 JP5448904 B2 JP 5448904B2 JP 2010030697 A JP2010030697 A JP 2010030697A JP 2010030697 A JP2010030697 A JP 2010030697A JP 5448904 B2 JP5448904 B2 JP 5448904B2
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- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 description 1
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Images
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Description
〔第1の実施形態〕
図1は、本発明の第1の実施形態に係る電極構造体の製造方法を示す図である。
基材3の材料としては、一般的には、ガラス(板)またはプラスチック(板またはフィルム)が使用される。目的とする電極構造体10が、基材3側から光を透過させる場合には、基材3の材料は透明である必要がある。また、電極構造体10をフレキシブルなものにする場合には、基材3の材料としては、プラスチックフィルムを使用する。
<硬化性材料の硬化前の貯蔵弾性率の測定方法>
厚さ20μmの硬化性材料層を形成し、これを積層して厚さ3mm、直径8mmの円板状の試験片とする。そして、ねじり剪断法により、下記の装置および条件で25℃における貯蔵弾性率を測定する。
測定装置:レオメトリック社製,動的粘弾性測定装置「DYNAMIC ANALYZER RDAII」
周波数 :1Hz
昇温速度:3℃/分
<硬化性材料の硬化後の貯蔵弾性率の測定方法>
厚さ20μmの硬化性材料層を形成し、これを積層して厚さ200μmとし、さらに窒素雰囲気下で紫外線(光量300mJ/cm2)を照射して硬化させ、これを短冊状の試験片とする。そして、下記の装置および条件で室温(25℃)における貯蔵弾性率を測定する。
測定装置:TAインスツルメント社製,動的弾性率測定装置「DMAQ800」
周波数 :11Hz
昇温速度:3℃/分
図2は、本発明の第2の実施形態に係る電極構造体の製造方法を示す図である。なお、本実施形態で使用する材料は、前述した第1の実施形態で使用した材料と同じである。
ブチルアクリレート62質量部と、メチルメタクリレート10質量部と、2−ヒドロキシエチルアクリレート28質量部とを酢酸エチル中で反応させて、官能基にヒドロキシル基を有するアクリル系共重合体の酢酸エチル溶液(固形分濃度40質量%)を得た。
イソホロンジイソシアネートと2−ヒドロキシプロピルアクリレートとを反応させて得られた2官能ウレタンアクリレート40質量部、トリシクロデカンジメタノールジメタクリレート(新中村化学社製,DCP)30質量部、およびペンタエリスリトールテトラアクリレート(新中村化学社製,A−TMMT)30質量部からなる液状の硬化型樹脂組成物を調製した。
実施例1と同様にして、基材上に硬化型樹脂組成物の塗布剤を塗布・乾燥して、硬化性材料層を形成した。この硬化性材料層の表面に、実施例1で用いたスタンパー(剥離処理済)を圧着し、その状態で、基材側から紫外線(光量:300mJ/cm2)を照射して、硬化型樹脂組成物を硬化させて凹凸基層を形成した。その後、スタンパーを剥離して、スタンパーの凹凸構造が転写された凹凸基層と、基材とからなる積層体を得た。
実施例および比較例で得られた電極構造体の表面を、走査型電子顕微鏡を用いて6万倍で観察した。それにより、欠点がなく、均一な高さ(300nm)と直径(200nm)を有するナノピラー構造の数が、電極構造体表面2×2μmの面積におけるナノピラー構造の総数に占める割合(%)を導き出した。結果を表1に示す。
実施例および比較例で得られた電極構造体に対し、AM1.5G、擬似太陽光(100mw/cm2)を照射光源として照射し、ソースメジャーユニット(ワコム電創社製)を用いて電流電圧特性を測定することにより、光電変換効率(%)を求めた。結果を表1に示す。
2…第1の導電体層
3…基材
4…硬化性材料
5…凹凸基層
6…光電変換活性層(半導体層)
7…第2の導電体層
10…電極構造体
Claims (13)
- 微細な凹凸構造を有する電極構造体を製造する方法であって、
表面に微細な凹凸構造を有するスタンパーの前記表面上に、導電体層を剥離可能に形成し、
前記スタンパー上の前記導電体層と、硬化性材料とを接触させ、
その状態で前記硬化性材料を硬化させて、微細な凹凸構造を有する凹凸基層を形成するとともに、前記凹凸基層と前記導電体層とを接着し、
前記スタンパーと、前記凹凸基層に接着された前記導電体層とを分離し、もって前記凹凸基層上に前記導電体層を転写して形成する
ことを特徴とする電極構造体の製造方法。 - 前記スタンパー上の前記導電体層と、前記硬化性材料とを接触させるとき、前記硬化性材料はシート状になっており、前記スタンパーの前記導電体層側を、前記シート状の硬化性材料に圧着することを特徴とする請求項1に記載の電極構造体の製造方法。
- 前記シート状の硬化性材料の硬化前の貯蔵弾性率が、1×103〜1×106Paであることを特徴とする請求項2に記載の電極構造体の製造方法。
- 前記スタンパー上の前記導電体層と、前記硬化性材料との接触は、前記導電体層上に、前記硬化性材料の層を形成することにより行うことを特徴とする請求項1に記載の電極構造体の製造方法。
- 前記スタンパー上の前記導電体層に、液状の硬化性材料を塗布することにより、前記硬化性材料の層を形成することを特徴とする請求項4に記載の電極構造体の製造方法。
- スパッタリングにより前記導電体層を前記スタンパーに形成することを特徴とする請求項1〜5のいずれかに記載の電極構造体の製造方法。
- 前記導電体層を前記スタンパーに形成する前に、前記スタンパーの前記表面に対して剥離処理を施すことを特徴とする請求項1〜6のいずれかに記載の電極構造体の製造方法。
- 前記凹凸基層上に転写した前記導電体層上に、さらに半導体からなる半導体層を形成することを特徴とする請求項1〜7のいずれかに記載の電極構造体の製造方法。
- 前記半導体が有機半導体であることを特徴とする請求項8に記載の電極構造体の製造方法。
- 前記硬化性材料は、(メタ)アクリル酸エステル共重合体と、エネルギー線硬化型のモノマーおよび/またはオリゴマーとを含有する硬化型樹脂組成物であることを特徴とする請求項1〜9のいずれかに記載の電極構造体の製造方法。
- 前記硬化性材料は、側鎖に重合性基を有する(メタ)アクリル酸エステル共重合体を含有する硬化型樹脂組成物であることを特徴とする請求項1〜10のいずれかに記載の電極構造体の製造方法。
- 前記微細な凹凸構造が、ナノピラー構造であることを特徴とする請求項1〜11のいずれかに記載の電極構造体の製造方法。
- 前記電極構造体が、エネルギー変換素子用の電極構造体であることを特徴とする請求項1〜12のいずれかに記載の電極構造体の製造方法。
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