The Influence of Different P-Type Layer Materials on the Photovoltaic Characteristic of Organic p-i-n Heterojunction Solar Cells

• Main Authors: Bin-hsuan Chang, 張濱璿
• Other Authors: Ching-Wu Wang
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/18161166363062431815

碩士 === 國立中正大學 === 光機電整合工程所 === 95 === The influence of the p-type layer on the performance of deposited 3,4,9,10-perylene-tetracarboxylic dianhydride (PTCDA) based on organic p-i-n solar cells is investigated. Two different p-type materials were used: zinc phthalocyanine (ZnPc) and amine 4,4’, 4’’-tris{N,(3-methylphenyl)-N-phenylamino}-triphenylamine (m-MTDATA). It could be significant further improvements in power conversion efficiency by using the suitable p-type layer materials. Evidences showed that ZnPc is an apropos p-type material with match energy level. In addition, the broader spectral coverage of ZnPc is another key factor contributing to the higher photocurrent. It also possesses a shallow bulk trap level, providing more detrapping holes form the bulk trap states to highest occupied molecular orbital states for transporting in ZnPc. It is suggested that these are the main contributing factors to the superior photocurrent and high power conversion efficiency.