Air-stable inverted flexible polymer solar cells using zinc oxide nanoparticles as an electron selective layer

作者：Hau Steven K; Yip Hin Lap; Baek Nam Seob; Zou Jingyu; O'Malley Kevin; Jen Alex K Y^*

来源：Applied Physics Letters, 2008, 92(25): 253301.

DOI：10.1063/1.2945281

The performance and stability of unencapsulated inverted bulk-heterojunction solar cells with zinc oxide (ZnO) made by different processes as the electron selective contact are compared to conventional bulk-heterojunction solar cells. The low temperature processed inverted devices using ZnO nanoparticles on indium tin oxide plastic substrates showed high power conversion efficiency of similar to 3.3%. This inverted device structure possessed much better stability under ambient conditions retaining over 80% of its original conversion efficiency after 40 days while the conventional one showed negligible photovoltaic activity after 4 days. This is due to the improved stability at the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/Ag interface.

• 出版日期2008-6-23