Dopant-free 3,3′-bithiophene derivatives as hole transport materials for perovskite solar cells

作者：Gong, Genfei; Zhao, Ning; Ni, Debin; Chen, Jianyou; Shen, Yan; Wang, Mingkui^*; Tu, Guoli^*

来源：Journal of Materials Chemistry A, 2016, 4(10): 3661-3666.

DOI：10.1039/c6ta00032k

• FIELD-EFFECT TRANSISTORS
• CHARGE-TRANSFER
• INTERFACE
• CONDUCTOR

Three 3,3'-bithiophene derivatives (DHPT-SC, DOPT-SC and DEPT-SC) have been efficiently synthesized by a Stille reaction. X-ray diffraction analysis revealed unique swivel-cruciform configurations and weak intermolecular pi-pi stacking in these materials. Perovskite solar cells using these pristine hole transport materials without dopants have achieved power conversion efficiencies of 8.35%, 8.69%, and 9.73% with good air stability. This present finding develops dopant-free hole transport materials for perovskite solar cells.

• 出版日期2016
• 单位华中科技大学