| Abstract: | ![]()
Interfacial engineering has made an outstanding contribution to the development of high-efficiency perovskite solar cells(PSCs).Here,we introduce an effective interface passivation strategy via methoxysilane molecules with different terminal groups.The power conversion efficiency(PCE)has increased from 20.97％to 21.97％after introducing a 3-isocyanatopropyltri-methoxy silane(IPTMS)molecule with carbonyl group,while a trimethoxy[3-(phenylamino)propyl]silane(PAPMS)molecule con-taining aniline group deteriorates the photovoltaic performance as a consequence of decreased open circuit voltage.The im-proved performance after IPTMS treatment is ascribed to the suppression of non-radiative recombination and enhancement of carrier transportation.In addition,the devices with carbonyl group modification exhibit outstanding thermal stability,which maintain 90％of its initial PCE after 1500 h exposure.This work provides a guideline for the design of passivation molecules aim-ing to deliver the efficiency and thermal stability simultaneously. |
