Alcohol soluble titanium(IV) oxide bis(2,4-pentanedionate) as electron collection layer for efficient inverted polymer solar cells

作者：Wang, Fuzhi; Xu, Qi; Tan, Zhan'ao^*; Qian, Deping; Ding, Yuqin; Li, Liangjie; Li, Shusheng; Li, Yongfang

来源：Organic Electronics, 2012, 13(11): 2429-2435.

DOI：10.1016/j.orgel.2012.07.005

• Titanium(IV)oxide bis(2,4-pentanedionate)
• Polymer solar cells
• Electron collection layer

We demonstrate efficient inverted polymer solar cells (PSCs) based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) by using solution-processed titanium(IV) oxide bis(2,4-pentanedionate) (TOPD) as electron collection layer (ECL) between the indium tin oxide (ITO) electrode and photoactive layer. The TOPD buffer layer was prepared by spin-coating isopropanol solution of TOPD on ITO and then baked at 140 degrees C for 5 min. The power conversion efficiency (PCE) of the inverted PSC with TOPD buffer layer reaches 4% under the illumination of AM1.5G, 100 mW/cm(2), which is increased by 76% in comparison with that (2.27%) of the inverted device without TOPD ECL. The results indicate that TOPD is a promising electron collection layer for inverted PSCs.

• 出版日期2012-11
• 单位新能源电力系统国家重点实验室; 华北电力大学; 中国科学院