인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Chiral molecules have shown potential in passivating perovskite solar-cell interfaces and boosting charge transport and have drawn significant research interest. However, the specific passivation mechanisms of different chiral structures on perovskite films and their photoelectric effects require further investigation. In this study, chiral R-, S-, and rac-methylbenzylammonium chloride (MBACl) molecules are used to address interface defects. S-MBACl exhibits the strongest chelation and passivation effects. Kelvin probe force microscopy results show that S-MBACl increases the surface potential differences between dark and illuminated states by 227%, from 39.67 to 129.91 mV, and enhances electron-hole separation. Consequently, the power conversion efficiency (PCE) of S-MBACl-modified devices is 24.07%, which is 109% times that of the pure perovskite sample. The PCE of unencapsulated S-MBACl-modified perovskite solar cells remains at 89% of the initial value after aging at 25 °C for 2400 h in the N<sub>2</sub> atmosphere. This study provides valuable insights for future studies on chiral passivation molecules.
#Passivation
#Perovskite (structure)
#Materials science
#Energy conversion efficiency
#Molecule
#Kelvin probe force microscope
#Solar cell
#Perovskite solar cell
#Chemical engineering
#Nanotechnology
#Optoelectronics
#Chemistry
#Crystallography
#Organic chemistry
#Atomic force microscopy
#Layer (electronics)
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