Investigation of organic solar cells utilizing carbazole-based donors

• Main Authors: Chung-an Hsieh, 謝仲安
• Other Authors: Li-Yin Chen
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/y24urv

碩士 === 國立中山大學 === 光電工程學系研究所 === 103 === Emerging demands for solar energy continuously inspires the development of new materials and device structures. Organic solar cells, which offer the advantages of easy manufacturing, low cost, capability of large-area process, and flexibility, have become one of important research topics in recent years. In this thesis, we use a series of materials containing carbazole moiety and electron-withdrawing end group as the electron donor materials of organic solar cells. Both the symmetric and asymmetric molecule structures are discussed. Com54 shows the best performance among all symmetrical molecules with the configuration of planar mixed heterojunction structure, which gives a power conversion efficiency of 1.44%, open circuit voltage of 0.8V, short circuit current density of 4.13 mA/cm2, and fill factor of 0.43. Com52 shows the best performance among all asymmetrical molecules with the configuration of bilayer heterojunction structure, which gives a power conversion efficiency of 0.36%, open circuit voltage of 1.02V, short circuit current density of 0.93 mA/cm2, and fill factor of 0.31.