Here the influence of processing temperature on the properties of zinc oxide(ZnO)thinfilms fabricated using a carbon-free solution process is investigated.Our results show that thefilm processing tempera ture influenc...Here the influence of processing temperature on the properties of zinc oxide(ZnO)thinfilms fabricated using a carbon-free solution process is investigated.Our results show that thefilm processing tempera ture influences a wide range of structural and electro-optical properties.Films processed at 100℃are shown to be formed of coalesced ZnO nanoparticles,whose dimensions increase with the processing temperature,accompanied by an increase in electron mobility.ZnOfilms processed at different tempera tures were incorporated as electron transport layers(ETLs)in organic photovoltaic devices with PCDTBT:PC71 BM as the active layer.Wefind that the ETLs processed at low temperature(100-200℃)exhibit good device performance compared with those prepared at elevated temperatures,an effect we attribute to shifts in the work function and electrical conductivity.Interestingly a similar trend is observed when our ZnO is used as an electron injection layer in organic light emitting diodes,where the EILs processed at>200℃show higher turn-on voltages and lower effciencies than those annealed in the 100-200℃range.展开更多
基金the National Key Research and Development Program of China(No.2019YFA0705900)funded by MOST.the National Natural Science Foundation of China(No.61804063)+3 种基金the Natural Science Foundation of Jilin Province(No.20190201208JC)the Science and Technology Foundation of Department of Education,Jilin Province(Grant:JJKH20190136KJ)the Open Foundation of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,Jilin University(Grant:2019-24)MAM is grateful for continued support from the EPSRC Centre for Doctoral Training in Plastic Electronics EP/L016702/1.
文摘Here the influence of processing temperature on the properties of zinc oxide(ZnO)thinfilms fabricated using a carbon-free solution process is investigated.Our results show that thefilm processing tempera ture influences a wide range of structural and electro-optical properties.Films processed at 100℃are shown to be formed of coalesced ZnO nanoparticles,whose dimensions increase with the processing temperature,accompanied by an increase in electron mobility.ZnOfilms processed at different tempera tures were incorporated as electron transport layers(ETLs)in organic photovoltaic devices with PCDTBT:PC71 BM as the active layer.Wefind that the ETLs processed at low temperature(100-200℃)exhibit good device performance compared with those prepared at elevated temperatures,an effect we attribute to shifts in the work function and electrical conductivity.Interestingly a similar trend is observed when our ZnO is used as an electron injection layer in organic light emitting diodes,where the EILs processed at>200℃show higher turn-on voltages and lower effciencies than those annealed in the 100-200℃range.
