Hydrogen-bond-bridged intermediate for perovskite solar cells …
2023年4月10日 · Here we report the formation of a hydrogen-bond-bridged intermediate by adding a multifunctional molecule (4-guanidinobenzoic acid hydrochloride (GBAC)) into the perovskite precursor to...
Hydrogen bond-mediated pseudo-halide complexation for stable …
2024年9月13日 · To address these issues, we designed the 3-mercaptobenzoic acid (3-MBA) additive, which facilitates spontaneous deprotonation due to its carboxyl group and enables hydrogen bonding with formamidinium (FA +). Adding 3-MBA to the perovskite precursor solution inhibits both deprotonation of organic cations and oxidation of halide ions, thereby ...
Orientated crystallization of FA-based perovskite via hydrogen …
2023年2月2日 · The strong hydrogen-bonding interaction of FTPA-perovskite slowed down the release of cations and anions of perovskite during the annealing process, resulting in an increased energy barrier...
Hydrogen bonding in perovskite solar cells - ScienceDirect
2024年1月3日 · Inter- and intramolecular hydrogen bonding between alkylammonium donors and the halides affects crystal structure, directly impacting both the band structure and stability of the perovskite phase. More subtle effects have been revealed on charge transport, ion migration, mechanical performance, etc.
Hydrogen Bonds in Perovskite for Efficient and Stable …
2024年2月13日 · This review explores the intrinsic hydrogen bonds in methylammonium and formamidium lead triiodide, while also considering cation rotations, phase transitions, and stability. Moreover, the review classifies additives into distinct categories, including organic small molecules, polymers, nanodots, classical salts, ionic liquids, and molten salts.
Aqueous synthesis of perovskite precursors for highly efficient ...
2024年2月1日 · High-purity precursor materials are vital for high-efficiency perovskite solar cells (PSCs) to reduce defect density caused by impurities in perovskite. In this study, we present aqueous synthesize...
Hydrogen Bonds in Precursor Solution: The Origin of the …
2022年4月26日 · In this study, we found that the quality of perovskite crystal from GQP is much more sensitive to Lewis base molecules (LBMs) in the precursor solution than it is in anti-solvents technology. Thus, the processing parameters of the LBMs in anti-solvents technology cannot be directly transferred to the GQP.
Hydrogen bonding in perovskite solar cells - Cell Press
2023年11月10日 · The record power conversion efficiency (PCE) of single-junction halide perovskite solar cells (PSCs) has reached 26.1% and recently 33.7% for a perovskite/Si tandem. 1 The rapid and impressive achievement makes halide perovskites the most promising candidate for the next generation of photovoltaic technology.
Inter- and intramolecular hydrogen bonding between alkylammonium donors and the halides affects crystal structure, directly impacting both the band structure and sta-bility of the perovskite phase. More subtle effects have been re-vealed on charge transport, ion migration, mechanical performance, etc.
Stable and efficient perovskite solar cells via hydrogen bonding …
2023年11月6日 · Herein, we introduced an n-type, low optical gap-conjugated organic molecule (i.e., COTIC-4F or COTIC-4Cl) to serve as the perovskite photoactive layer in a perovskite precursor solution for broadening the near-infrared spectral response and enhancing the efficiency of PSCs.