Incorporation of potassium at CuPc/C-60 interface for photovoltaic application

作者：Shih Chuan Feng^*; Hung Kuang Teng; Chen Hui Ju; Hsiao Chu Yun; Huang Kuan Ta; Chen Szu Hung

来源：Applied Physics Letters, 2011, 98(11): 113307.

DOI：10.1063/1.3568884

This letter demonstrates the effect of potassium (K) doping at the donor-acceptor interface of CuPc/C-60-based organic solar cells. Power conversion efficient (PCE) doubled when a little K was doped into the CuPc/C-60 interface and the device was postannealed (75 degrees C, 10 min). Changes in binding energies, depletion capacitance, and mobilities of electrons and holes were investigated. The marked improvement of PCE arose mostly from the increase in short-circuit current, owing to the modified charge transfer process.

• 出版日期2011-3-14