Zhang, Chaohong published the artcileTop-down strategy identifying molecular phase stabilizers to overcome microstructure instabilities in organic solar cells, Safety of Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, the main research area is organic solar cell microstructure instability mol phase stabilizer.
The operational stability of organic solar cells (OSCs) is the essential barrier to commercialization. Compared to thermally-induced degradation, photo-stability of OSCs is far away from being resolved. Here, we demonstrate that the thermal- and photo-degradation of metastable bulk-heterojunction OSCs are governed by the same mechanism. Understanding the fundamental principles behind this mechanism is of significant importance to fully address the instability issues. Structural incompatibilities between the donor and acceptor mols. are identified as the main origin of the instability. Further, we introduce a top-down approach mainly based on their melting temperature and interaction parameters to rationally screen mol. phase stabilizers from a database with more than 10 000 small mols. Eventually, five chems. were selected to validate our concept and tested in unstable organic solar cells. 1,4-Piperazine, which possesses a high m.p., good miscibility with polymers and the capability of forming inter-mol. hydrogen bonding, can indeed stabilize the mixed amorphous phases, leading to significantly improved stability of otherwise metas table OSCs.
Energy & Environmental Science published new progress about Annealing. 52829-07-9 belongs to class piperidines, name is Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, and the molecular formula is C28H52N2O4, Safety of Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate.
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem