基于1,8-萘酰亚胺受体小分子的制备及其在宽带隙聚合物太阳能电池中的应用
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- 英文论文题名：1,8-Naphthalimide Based Planar Small Molecular Acceptor for Organic Solar Cells
- 论文作者：李翠红 ; 张吉成 ; 薄志山
- 英文论文作者：Cuihong Li ; Jicheng Zhang ; Zhishan Bo ; College of Chemistry ; Beijing Normal University
- 年：2016
- 作者机构：北京师范大学化学学院;
- 论文关键词：宽带隙聚合物 ; 小分子受体 ; 能量损失
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十二分会：有机光伏的机遇和挑战
- 语种：中文
- 分类号：TM914.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十二分会 ; 有机光伏的机遇和挑战
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：189k
- 原文格式：D
- 会议级别：全国
摘要
为了减小宽带隙聚合物太阳电池中的能量损失,合成系列具有较高LUMO能级的受体分子。在该工作中通过C-H活化的方法合成了新型的基于1,8-萘酰亚胺的受体小分子SM1-4,这类分子具有较高的LUMO能级,可适用于宽带隙聚合物太阳电池中。研究发现1,8-萘酰亚胺的受体小分子的平面性影响分子在薄膜中的堆叠以及其电子迁移率,具有较好平面性的分子SM1在应用于宽带隙聚合物PCDTBT-C12太阳电池,最终获得2.78%的光电转换效率。
Four small molecular acceptors(SM1-4) based1,8-naphthalimide(NI) groups were designed and synthesized by direct C-H activation. SM1 has a planar chemical structure and forms H-aggregation as films. By attaching different substituents on the central benzene ring, the dihedral angles between the two NI end groups of SM1-4 gradually increased, leading to a gradual decrease of planarity. SM1-4 all possess a high-lying LUMO level, matching with wide band gap(WBG) polymer donors which usually have a high-lying LUMO level. When used in OSCs, devices based on SM1 and WBG donor PCDTBT-C12 gave higher electron mobility, superior film morphology and better photovoltaic performance. After optimization, a PCE of 2.78% with a V_(oc) of 1.04 V was achieved for SM1 based devices, which is among the highest PCEs with a V_(oc) higher than 1 V.
Four small molecular acceptors(SM1-4) based1,8-naphthalimide(NI) groups were designed and synthesized by direct C-H activation. SM1 has a planar chemical structure and forms H-aggregation as films. By attaching different substituents on the central benzene ring, the dihedral angles between the two NI end groups of SM1-4 gradually increased, leading to a gradual decrease of planarity. SM1-4 all possess a high-lying LUMO level, matching with wide band gap(WBG) polymer donors which usually have a high-lying LUMO level. When used in OSCs, devices based on SM1 and WBG donor PCDTBT-C12 gave higher electron mobility, superior film morphology and better photovoltaic performance. After optimization, a PCE of 2.78% with a V_(oc) of 1.04 V was achieved for SM1 based devices, which is among the highest PCEs with a V_(oc) higher than 1 V.
引文
[1]Christian B.Nielsen,Sarah Holliday,Hung-Yang Chen,Samuel J.Cryer,and Iain Mc Culloch,Acc.Chem.Res,2015,48:2803.