Synthesis of CuInS2 nanocrystals and Quantum dots apply to Solar Cell

• Main Authors: Hsueh-Chieh Chang, 張學謙
• Other Authors: Jia-Yaw Chang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/79752467505008144234

碩士 === 國立臺灣科技大學 === 化學工程系 === 102 === In This study, we synthesized the I-III-VI group Cu2S-CuInS2 (Cu-CIS) heterostructure as candidate to replace the expensive platinum (Pt) counter electrode that has been commonly applied. DSSC analysis then implemented to characterize as-prepared Cu-CIS, while electrochemical analysis was employed to understand dynamic behavior of Cu-CIS and Pt counter electrode. In other part, we using the same process to Indium-rich CuInS2 (In-CIS) quantum dots (Quantum dots) and further deposited on photoelectrode of titanium dioxide (TiO2) and SILAR (Successive Ionic Layer Adsorption and Reaction), respectively. By designing this QDSSC (Quantum Dots Sensitized Solar Cells), we improve comparing Cu-CIS and Pt along with observes the effect on combining two types of quantum dot sensitization through energy level perspective. Furthermore, as-prepared hot synthesis SILAR deposited on the titanium dioxide also investigated Incident Photon to Current Conversion Efficiency (IPCE) where perform wider absorption wavelength and higher conversion efficiency than commonly counter electrode. In QDSSC, the photoelectric conversion efficiency is 2.37% of In-CIS/CdS QDs, which is better than other types of quantum dots results of co-sensitization significantly. The resulted Cu-CIS can perform better catalytic activity than conventional Pt counter electrode as well as low cost requirement. The resulted data could claim the practical benefit on using Cu-CIS as counter electrode.