Inclusion of triphenylamine unit in dopant-free hole transport material for enhanced interfacial interaction in perovskite photovoltaics was written by Lee, Ji Hyeon;Jang, Min Ho;Lee, Chan Hee;Lee, Jae-Joon;Lee, Sae Youn;Jo, Jea Woong. And the article was included in Dyes and Pigments in 2022.HPLC of Formula: 128-08-5 This article mentions the following:
Dopant-free hole transport material (HTM) has been recognized as an essential material for achieving efficient and stable perovskite photovoltaics (PPVs). Currently, conjugated polymer has emerged as a promising dopant-free HTM; however, its insufficient interaction with perovskite absorbers limits an efficient interfacial passivation and charge extraction when employed in PPVs. In this study, we developed a high-performance dopant-free HTM by the partial substitution of a conjugated polymer with triphenylamine unit. The anal. of the performance of the HTM revealed that the modification of the polymer HTM using triphenylamine unit enhanced its interaction with perovskite and its passivation ability. Furthermore, an increase in the number of face-on orientated crystallites after the triphenylamine substitution enhanced the charge transport ability of the polymer HTM. Consequently, the PPVs fabricated using the triphenylamine-substituted polymer HTM exhibited a high efficiency of 20.4% and an enhanced long-term stability compared to the devices fabricated using a control polymer without triphenylamine-substitution (15.8%). In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5HPLC of Formula: 128-08-5).
1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.HPLC of Formula: 128-08-5
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary