Curved BN-embedded nanographene for application in organic solar cells

doi:10.1039/c6ta06523f

CORC > 北京大学 > 化学与分子工程学院

	Curved BN-embedded nanographene for application in organic solar cells
	Zhong, Zhiming ; Wang, Xiao-Ye ; Zhuang, Fang-Dong ; Ai, Na ; Wang, Jian ; Wang, Jie-Yu ; Pei, Jian ; Peng, Junbiao ; Cao, Yong
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2016
关键词	OPEN-CIRCUIT VOLTAGE POLYCYCLIC AROMATIC-HYDROCARBONS CHARGE-CARRIER MOBILITY PHOTOVOLTAIC CELLS HIGH-EFFICIENCY OPTOELECTRONIC PROPERTIES DIELECTRIC-CONSTANT SMALL MOLECULES ACTIVE LAYER POLYMER
DOI	10.1039/c6ta06523f
英文摘要	A BN-embedded polycyclic aromatic compound, BN-dibenzotetrathienocoronene (BN-DBTTC), is utilized for application in organic photovoltaic devices. Although BN-DBTTC has a large energy gap of 2.59 eV, the devices with PC71BM as the acceptor show a power conversion efficiency (PCE) of up to 3.12% at a donor-acceptor (D-A) molar ratio (MR) of 1 : 4. An open circuit voltage (V-oc) of 0.96 +/- 0.01 V is achieved at a MR of 1 : 2. The high V-oc is ascribed to the lowered HOMO level by introducing BN units into the pi-system and the supramolecular interaction between the curved pi-surface of BN-DBTTC and PC71BM. Moreover, BN-DBTTC is added to a PTB7: PC71BM device to control the morphology of the blend film, showing increased PCE and enhanced stability by suppressing the crystallization of PCBM. After BN-DBTTC is introduced, the domain size is reduced from similar to 200 nm to well below 20 nm. At a weight ratio of PTB7 : BN-DBTTC : PC71BM = 8 : 3 : 12, the PCE is enhanced from 3.91% to 4.75%, and the PCE degradation is reduced from 47.8% to 26.7% after 20-month storage. BN-DBTTC is better than 1,8-diiodooctane (DIO) as the PCBM aggregation inhibitor in terms of process simplicity because as a photoactive material, BN-DBTTC doesn't need to be removed after processing.; National Key Basis Research and Development Program of China (973 Program) [2015CB655004]; National Nature Science Foundation of China [51573056, 51373057]; Science and Technology Project of the Guangdong Province [2014B090916001, 2015B090915001]; SCI(E); ARTICLE; jianwang@scut.edu.cn; jianpei@pku.edu.cn; 40; 15420-15425; 4
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/459217]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhong, Zhiming,Wang, Xiao-Ye,Zhuang, Fang-Dong,et al. Curved BN-embedded nanographene for application in organic solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016.
APA	Zhong, Zhiming.,Wang, Xiao-Ye.,Zhuang, Fang-Dong.,Ai, Na.,Wang, Jian.,...&Cao, Yong.(2016).Curved BN-embedded nanographene for application in organic solar cells.JOURNAL OF MATERIALS CHEMISTRY A.
MLA	Zhong, Zhiming,et al."Curved BN-embedded nanographene for application in organic solar cells".JOURNAL OF MATERIALS CHEMISTRY A (2016).