Highly efficient modulation of the electronic properties of organic semiconductors by surface doping with 2D molecular crystals

• 作者: Fei Zhai Rongjin Li Shuyuan Yang Wei Feng Wenping Hu Xiaotao Zhang Xiaoting Zhu Yiyu Feng Yu Zhang
• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2020,（7）
• 页码范围: 973-979
• 页数: 7页
• 语种: 英文

摘要

Doping is a critically important strategy to modulate the properties of organic semiconductors (OSCs) to improve their optoelectrical performances.Conventional bulk doping involves the incorporation of foreign molecular species (i.e.,dopants) into the lattice of the host OSCs,and thus disrupts the packing of the host OSCs and induces structural defects,which tends to reduce the mobility and (or) the on/offratio in organic field-effect transistors (OFETs).In this article,we report a highly efficient and highly controllable surface doping strategy utilizing 2D molecular crystals (2DMCs) as dopants to boost the mobility and to modulate the threshold voltage of OFETs.The amount of dopants,i.e.,the thickness of the 2DMCs,is controlled at monolayer precision,enabling fine tuning of the electrical properties of the OSCs at unprecedented accuracy.As a result,a prominent increase of the average mobility from 1.31 to 4.71 cm2 V-1 s-1 and a substantial reduction of the threshold voltage from-18.5 to -1.8 V are observed.Meanwhile,high on/off ratios of up to 108 are retained.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Wenping Hu		2	0	0.0	0.0
2	Yu Zhang		1	0	0.0	0.0
3	Shuyuan Yang		1	0	0.0	0.0
4	Xiaoting Zhu		1	0	0.0	0.0
5	Fei Zhai		1	0	0.0	0.0
6	Yiyu Feng		1	0	0.0	0.0
7	Wei Feng		1	0	0.0	0.0
8	Xiaotao Zhang		1	0	0.0	0.0
9	Rongjin Li		1	0	0.0	0.0