Tetraphenylphosphonium Bromide as a Cathode Buffer Layer Material for Highly Efficient Polymer Solar Cells

doi:10.1021/acsami.7b17870

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	Tetraphenylphosphonium Bromide as a Cathode Buffer Layer Material for Highly Efficient Polymer Solar Cells
	Gupta, Monika 1; Yan, Dong 1; Xu, Jianzhong 2; Yao, Jiannian 1; Zhan, Chuanlang 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2018-02-14
卷号	10 期号:6 页码:5569-5576
关键词	Bulk Heterojunction Solar Cell Interfacial Engineering Solution-processible Alcohol Soluble Tetraphenylphosphonium Bromide
ISSN号	1944-8244
DOI	10.1021/acsami.7b17870
英文摘要	Here, we introduced the role of small organic molecule tetraphenylphosphonium bromide (QPhPBr) as an electron-transporting layer (ETL) material for fabricating high-efficiency bulk heterojunction polymer solar cells (PSCs). Their significantly higher power conversion efficiency (PCE) in well-known active layer devices (PTB7-Th:Pe(71)BM, PBDTTT-CT:PC71BM, and P3HT:PC71BM) was observed compared to that of the bare Al cathode. The use of N719 as an ETL was also demonstrated. Observed data reveal that QPhPBr-based devices exhibit high PCEs up to 9.18, 8.42, and 4.81% from PTB7-Th, PBDTTT-CT, and P3HT, respectively. For comparisons, the bare Al devices show PCEs of 5.37, 4.75, and 3.01%, respectively. Moreover, further enhancement of PSC efficiency (9.83, 8.69, and 5.35%) is achieved from mixed binary solution of N719:QPhPBr because of modulated adjustment of the work function of the Al electrode. Our results indicate the excellent function of tetraphenylphosphonium bromide and its binary blend as effective small-molecule organic materials to regulate the metal surface properties and the potential used as excellent cathode buffer layer materials for realizing high-efficiency PSCs.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000425572700046
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45583]
专题	中国科学院化学研究所
通讯作者	Xu, Jianzhong; Zhan, Chuanlang
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Photochem, Beijing 100190, Peoples R China 2.Hebei Univ, Coll Chem & Environm Sci, Baoding 071002, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Gupta, Monika,Yan, Dong,Xu, Jianzhong,et al. Tetraphenylphosphonium Bromide as a Cathode Buffer Layer Material for Highly Efficient Polymer Solar Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(6):5569-5576.
APA	Gupta, Monika,Yan, Dong,Xu, Jianzhong,Yao, Jiannian,&Zhan, Chuanlang.(2018).Tetraphenylphosphonium Bromide as a Cathode Buffer Layer Material for Highly Efficient Polymer Solar Cells.ACS APPLIED MATERIALS & INTERFACES,10(6),5569-5576.
MLA	Gupta, Monika,et al."Tetraphenylphosphonium Bromide as a Cathode Buffer Layer Material for Highly Efficient Polymer Solar Cells".ACS APPLIED MATERIALS & INTERFACES 10.6(2018):5569-5576.