Amorphous Hole-Transporting Material based on 2,2-Bis-substituted 1,1-Biphenyl Scaffold for Application in Perovskite Solar Cells

作者：Magomedov Artiom; Sakai Nobuya; Kamarauskas Egidijus; Jokubauskaite Gabriele; Franckevicius Marius; Jankauskas Vygintas; Snaith Henry J^*; Getautis Vytautas^*

来源：Chemistry-An Asian Journal, 2017, 12(9): 958-962.

DOI：10.1002/asia.201700173

• carbazoles
• materials science
• semiconductors
• perovskites
• solar cells

Perovskite solar cells are considered a promising technology for solar-energy conversion, with power conversion efficiencies currently exceeding 20%. In most of the reported devices, Spiro-OMeTAD is used for positive-charge extraction and transport layer. Although a number of alternative hole-transporting materials with different aromatic or heteroaromatic fragments have already been synthesized, a cheap and well-performing hole-transporting material is still in high demand. In this work, a two-step synthesis of a carbazole-based hole-transporting material is presented. Synthesized compounds exhibited amorphous nature, good solubility and thermal stability. The perovskite solar cells employing the newly synthesized material generated a power conversion efficiency of 16.5% which is slightly lower than that obtained with Spiro-OMeTAD (17.5%). The low-cost synthesis and high performance makes our hole-transport material promising for applications in perovskite-based optoelectronic devices.

• 出版日期2017-5-4