Teaching Research on the Training of Students'Innovative Thinking Ability Based on Maker Education Concept

In information economy era,training innovative talents is an important step for high speed development of country.Education is an important way to training innovative talents,and the effective cultivation of students;innovative ability is an important symbol of the success of education.Innovative thinking is the basis of innovation ability,we must first improve innovative thinking ability in order to improve innovation ability.In the field of education,middle school is the key step for students to learn diverse thinking,especially innovative thinking.The objective of this paper is to study this step and how can we help students improve their innovative thinking ability.

溶液法制备校正迁移率达到18 cm^2/(V s)的超柔性C8-BTBT有机薄膜晶体管

本文基于卷对卷狭缝涂布技术在柔性聚对苯二甲酸乙二醇酯(PET)基底上制备银纳米线(AgNWs)薄膜及AgNWs与PEDOT:PSS复合层薄膜(AgNWsPEDOT:PSS)作为底栅电极,溶液旋涂制备聚(4-乙基苯酚)-4,4?-(六氟异丙烯)二酞酸酐交联物(PVP-HDA)介电层及偏心旋涂制备2,7-二辛基[1]苯并噻吩并[3,2-b]苯并噻吩(C8-BTBT)有源活性层,再沉积金属源漏电极,构建柔性有机薄膜晶体管.基于AgNWs和AgNWs-PEDOT:PSS栅电极构建的柔性C8-BTBT有机薄膜晶体管最高迁移率分别达到32.9和33.6 cm^2/(V s),平均迁移率分别达到18.8和24.3 cm^2/(V s).引入校正因子r之后,最高迁移率分别为17.6和18.3 cm^2/(V s),平均迁移率分别为10.0和13.2 cm^2/(V s).该器件展示优异的柔韧性,在6 mm弯曲半径下弯折测试2000次后,平均迁移率保持80%,校正平均迁移率仍为8.0和10.6 cm^2/(V s),同时拥有良好的开关比.全溶液法低成本制备的高性能柔性C8-BTBT有机薄膜晶体管展现出重要的应用前景.

空气暴露对基于吸湿绝缘层的C8-BTBT有机薄膜晶体管器件性能的影响

有机薄膜晶体管(OTFTs)通常对环境条件敏感,在空气中暴露时其性能往往会出现退化.本文分析了基于聚(4-乙基苯酚)-4,4’-(六氟异丙烯)二酞酸酐交联物绝缘层(PVP-HDA)的2,7-二辛基[1]苯并噻吩[3,2-b][1]苯并噻吩(C8-BTBT)柔性OTFTs在40%相对湿度的空气环境中暴露不同时间对器件性能的影响.研究发现,PVPHDA绝缘层材料在短时间40%相对湿度的空气下吸附空气中的水分后,器件的性能有所提升.其中,基于375 nm PVP-HAD绝缘层薄膜的柔性OTFTs在相对湿度为40%的空气中放置6小时后,校正后的平均迁移率(μ)由3.2 cm^2V^-1s^-1提高到5.1 cm^2V^-1s^-1,平均阈值电压(Vth)由-12.4 V降低到-9.3 V,开关比仍保持在104.结果表明,此类OTFT器件有望能够在空气环境中进行大面积制备,并展现出良好的应用前景.