Improving optical performance of low bandgap polymer solar cells by the two-mode moderate microcavity

作者：Long; Yongbing

来源：Applied Physics Letters, 2011, 98(3): 033301.

DOI：10.1063/1.3541960

A two-mode moderate microcavity (MM) structure has been constructed to confine large optical electric field in the low band gap polymer solar cells by inserting a titanium dioxide (TiO2) layer into the devices. Simulations demonstrate the two-mode MM can significantly improve the light absorption at two discrete wavelength ranges and yield an improvement of about 13.8% in total absorbed photons (TAPs) for the device with a 60 nm thick active layer. Combined with an optical spacer, the MM structure leads to a larger improvement of 32.8% in TAPs. The efficacy of the MM structure is revealed to be strongly dependent on the active layer thickness.

• 出版日期2011-1-17
• 单位五邑大学