Organic solar cells(OSCs)processed without halogenated solvents and complex treatments are essential for future commercialization.Herein,we report three novel small molecule acceptors(NFAs)consisting of a Y6-like core...Organic solar cells(OSCs)processed without halogenated solvents and complex treatments are essential for future commercialization.Herein,we report three novel small molecule acceptors(NFAs)consisting of a Y6-like core but withπ-extended naphthalene with progressively more chlorinated end-capping groups and a longer branched chain on the Nitrogen atom.These NFAs exhibit good solubilities in nonchlorinated organic solvents,broad optical absorptions,closeπ-πstacking distances(3.63–3.84A),and high electron mobilities(~10^(-3)cm^(2)V^(-1)s^(-1)).The o-xylene processed and as-cast binary devices using PM6 as the donor polymer exhibit a PCE increasing upon progressive chlorination of the naphthalene end-capping group from 8.93%for YN to 14.38%for YN-Cl to 15.00%for YN-2Cl.Furthermore similarly processed ternary OSCs were fabricated by employing YN-Cl and YN-2Cl as the third component of PM6:CH1007 blends(PCE=15.75%).Compared to all binary devices,the ternary PM6:CH1007:YN-Cl(1:1:0.2)and PM6:CH1007:YN-2Cl(1:1:0.2)cells exhibit significantly improved PCEs of 16.49%and15.88%,respectively,which are among the highest values reported to date for non-halogenated solvent processed OSCs without using any additives and blend post-deposition treatments.展开更多
为降低以中密度纤维板(MDF)为表板的三聚氰胺浸渍纸贴面实木复合门扇制作和使用过程中的变形率,提高其结构稳定性,设计制作2组共6种不同表板结构的门扇进行对照测试。通过对翘曲度和表板含水率的测量分析,结果表明:双层和双贴面MDF表板...为降低以中密度纤维板(MDF)为表板的三聚氰胺浸渍纸贴面实木复合门扇制作和使用过程中的变形率,提高其结构稳定性,设计制作2组共6种不同表板结构的门扇进行对照测试。通过对翘曲度和表板含水率的测量分析,结果表明:双层和双贴面MDF表板结构均能增强门扇抗变形能力,对比常规门扇,测试中的双贴面4.5 mm MDF和5.7 mm MDF表板门扇7 d翘曲度均值分别降低71%和66%,单贴面双层3 mm普通和防潮MDF表板门扇降低29%和50%;单贴面4.5 mm MDF表板门扇7 d翘曲度均值升高25%;7 d观测期内表板含水率分布差异和含水率变化速度与门扇变形呈现相关性,测试中双贴面5.7 mm MDF表板门扇两项数据综合最佳。展开更多
基金supported by the National Natural Science Foundation of China(61804073)the Center for Light Energy Activated Redox Processes(LEAP),an Energy Frontier Research Center funded by the U.S.Department of Energy,Office of Science,Office of Basic Energy Sciences,under award DE-SC0001059+3 种基金the Mat CI Facility which receives support from the National Science Foundation MRSEC Program(NSF DMR-1720139)of the Materials Research Center at Northwestern Universitysupport from the US Office of Naval Research Contract N00014-20-1-2116the U.S.Department of Energy under contract No.DE-AC02-05CH11231at beamline 8-ID-E of the Advanced Photon Source,a U.S.Department of Energy(DOE)Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No.DE-AC0206CH11357。
文摘Organic solar cells(OSCs)processed without halogenated solvents and complex treatments are essential for future commercialization.Herein,we report three novel small molecule acceptors(NFAs)consisting of a Y6-like core but withπ-extended naphthalene with progressively more chlorinated end-capping groups and a longer branched chain on the Nitrogen atom.These NFAs exhibit good solubilities in nonchlorinated organic solvents,broad optical absorptions,closeπ-πstacking distances(3.63–3.84A),and high electron mobilities(~10^(-3)cm^(2)V^(-1)s^(-1)).The o-xylene processed and as-cast binary devices using PM6 as the donor polymer exhibit a PCE increasing upon progressive chlorination of the naphthalene end-capping group from 8.93%for YN to 14.38%for YN-Cl to 15.00%for YN-2Cl.Furthermore similarly processed ternary OSCs were fabricated by employing YN-Cl and YN-2Cl as the third component of PM6:CH1007 blends(PCE=15.75%).Compared to all binary devices,the ternary PM6:CH1007:YN-Cl(1:1:0.2)and PM6:CH1007:YN-2Cl(1:1:0.2)cells exhibit significantly improved PCEs of 16.49%and15.88%,respectively,which are among the highest values reported to date for non-halogenated solvent processed OSCs without using any additives and blend post-deposition treatments.
文摘为降低以中密度纤维板(MDF)为表板的三聚氰胺浸渍纸贴面实木复合门扇制作和使用过程中的变形率,提高其结构稳定性,设计制作2组共6种不同表板结构的门扇进行对照测试。通过对翘曲度和表板含水率的测量分析,结果表明:双层和双贴面MDF表板结构均能增强门扇抗变形能力,对比常规门扇,测试中的双贴面4.5 mm MDF和5.7 mm MDF表板门扇7 d翘曲度均值分别降低71%和66%,单贴面双层3 mm普通和防潮MDF表板门扇降低29%和50%;单贴面4.5 mm MDF表板门扇7 d翘曲度均值升高25%;7 d观测期内表板含水率分布差异和含水率变化速度与门扇变形呈现相关性,测试中双贴面5.7 mm MDF表板门扇两项数据综合最佳。
