摘要
Lead sulfide colloidal quantum dots(PbS CQDs),as a nov-el material for optoelectronic devices,have lately attracted a lot of attention mainly because of their tunable optoelectron-ic characteristics and low-temperature film preparation.PbS CQDs can harvest infrared(IR)light in single-junction,multi-junction,and tandem solar cells[1−3].Thanks to the combina-tion of surface chemical engineering and device structure en-gineering,the power conversion efficiency(PCE)for PbS CQDs solar cells has increased from less than 1%in 2005 to current 13.8%[4,5].
基金
This research was supported by the Japan Science and Technology Agency(JST)Mirai program(JPMJMI17EA),MEXT KAKENHI Grant(26286013,17H02736)
L.Ding thanks the National Key Research and Development Program of China(2017YFA0206600)
the National Natural Science Foundation of China(51773045,21772030,51922032 and 21961160720)for financial support.
