In 2019,Journal of Materials Chemistry A: Materials for Energy and Sustainability included an article by Zhang, Yun; Kou, Chun; Zhang, Junjie; Liu, Yahui; Li, Wenhua; Bo, Zhishan; Shao, Ming. Formula: C14H15NO2. The article was titled 《Crosslinked- and dopant-free hole transport materials for efficient and stable planar perovskite solar cells》. The information in the text is summarized as follows:
The performance of p-i-n planar perovskite solar cells (PSCs) strongly depends on the electronic structure and interfacial properties of hole transporting materials (HTMs). Four diphenylamine derivatives with a fluorene core were synthesized and employed as hole transport layers in inverted p-i-n planar PSCs. HTMs that are endowed with vinyl crosslinking units can form insoluble 3-dimensional networks under mild annealing temperature, which improve the solvent resistance during the device fabrication and morphol. stability. Also, the optimized devices incorporating crosslinked HTMs exhibit an impressive power conversion efficiency of 18.7% with a high Jsc of 20.89 mA cm-2, Voc of 1.15 V and FF of 77.8%, which are superior to those of PEDOT:PSS based PSCs. The UPS measurement justifies that the new HTMs feature deep HOMO levels aligning well with the perovskite. Also, the hydrophobic nature of the synthesized HTMs favors the formation of large grained and continuous perovskite films with good surface coverage, evidenced by the H2O contact angles and film morphol. measurements. Steady-state and time-resolved photoluminescence studies also reveal that fast charge transfer and suppressed recombination occur between the perovskite and HTMs. Employing crosslinked organic HTMs is a promising approach to achieve high efficiency and stable PSCs. After reading the article, we found that the author used Bis(4-methoxyphenyl)amine(cas: 101-70-2Formula: C14H15NO2)
Bis(4-methoxyphenyl)amine(cas: 101-70-2) is a diphenylamine derivative used as a chemical additive for cured rubber.Bis(4-methoxyphenyl)amine is highly toxic and may potentially induce chromosome abberation.Formula: C14H15NO2
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem