Organic Thin-Film Solar Cell Using Fullerene Derivative for Electron Acceptor and Method of Manufacturing the Same

A method of manufacturing fullerene derivative for electron acceptor, comprising:

• reacting 2,2-dimethyl-1,3-dioxane-4,6-dione represented by a chemical formula (IV) with a first alcohol, so as to obtain a first intermediate product, wherein the first intermediate product is represented by a chemical formula (II):
• wherein R1 is independently selected from the group consisting of straight-chained C2-10 alkyl groups;
• esterifying a second alcohol with the first intermediate product, so as to obtain a second intermediate product, wherein the second intermediate product is a malonic ester derivative, and the second intermediate product is represented by a chemical formula (III) as follows:
• wherein R2 is a group of C6H5—CnH2n—, and n of the R2 is 1 to 3;
• and
• subjecting the second intermediate product and a fullerene to perform a Bingel reaction, so as to obtain the fullerene derivative, wherein the fullerene derivative is represented by chemical formula (I) as follows:
• wherein F is fullerene.

An organic thin-film solar cell, comprising:

• a light-transmitting electrode;
• a hole-transferring layer disposed on the light-transmitting electrode;
• a photoactive layer disposed on the hole-transferring layer, wherein the photoactive layer comprises electron acceptor and electron donor, and the electron acceptor is represented by a chemical formula (I) as follows:
• wherein F is fullerene, R1 is independently selected from the group consisting of straight, branched or cyclic-chained C2-10 alkyl groups, R2 is a group of C6H5—CnH2n—, and n of the R2 is 1 to 3;
• and
• a metal electrode disposed on the photoactive layer.

A method of manufacturing organic thin-film solar cell, comprising:

• forming a photoactive layer on a light-transmitting electrode, where the photoactive layer comprises electron donor and electron acceptor, and the electron acceptor is represented by a chemical formula (I) as follows:
• wherein F is fullerene, R1 is independently selected from the group consisting of straight, branched or cyclic-chained C2-10 alkyl groups, R2 is a group of C6H5—CnH2n—, and n of the R2 is 1 to 3;
• and
• forming a metal electrode on the photoactive layer.