Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells

doi:10.1002/admi.201701117

	Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells
	Zhang, Xisheng 1,2; Wang, Qian 1; Jin, Zhiwen 1; Chen, Yanhuan 3; Liu, Huibiao 3; Wang, Jizheng 3; Li, Yuliang 3; Liu, Shengzhong (Frank)1,4
刊名	ADVANCED MATERIALS INTERFACES
	2018-01-23
卷号	5 期号:2
关键词	Efficiency Graphdiyne Perovskite Quantum Dots Stability
ISSN号	2196-7350
DOI	10.1002/admi.201701117
文献子类	Article
英文摘要	Comparing to other carbon materials, the general graphyne structure is much superior in terms of adaptable bandgap, uniformly distributed pores, more design flexibility, easier for chemical synthesis, pliable electronic properties, and smaller atomic density. Herein, novel -graphdiyne quantum dots (GD QDs) are used in perovskite solar cells as a surface modifier or dopant to TiO2, CH3NH3PbI3, and Spiro-OMeTAD to realize multiple advantageous effects, in hoping that it would form a more effective carrier transport channel for boosted solar cell performance. First, the presence of GD QDs on TiO2 surface increases perovskite grain size for higher current density and fill factor. Second, the GD QDs at each interface reduce the conduction band offset, passivate the surface for suppressed carrier recombination to attain higher open-circuit voltage. Third, it improves hydrophobicity and eliminates pinholes in the Spiro-OMeTAD film for enhanced solar cell stability. As a result, the optimized device shows >15% enhancement in power conversion efficiency (from 17.17 to 19.89%) comparing to the reference device. More significantly, the device stability was improved in harsh environment (moist air, UV irradiation, or thermal conditions). It is expected that GD QDs will find their applications in efficient and stable perovskite solar cells and optoelectronic devices.
WOS关键词	OPEN-CIRCUIT VOLTAGE ; ELECTRON EXTRACTION ; HALIDE PEROVSKITES ; TRANSPORT LAYER ; PERFORMANCE ; PASSIVATION ; TIO2 ; MONOLAYER ; INTERFACE ; GRAPHYNE
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000423173800015
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/168466]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Jin, Zhiwen; Wang, Jizheng; Li, Yuliang; Liu, Shengzhong (Frank)
作者单位	1.Shaanxi Normal Univ, Shaanxi Engn Lab Adv Energy Technol, Shaanxi Key Lab Adv Energy Devices,Sch Mat Sci &, Natl Minist Educ,Key Lab Appl Surface & Colloid C, Xian 710119, Shaanxi, Peoples R China 2.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng 044000, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Organ Solids, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, iChEM, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xisheng,Wang, Qian,Jin, Zhiwen,et al. Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells[J]. ADVANCED MATERIALS INTERFACES,2018,5(2).
APA	Zhang, Xisheng.,Wang, Qian.,Jin, Zhiwen.,Chen, Yanhuan.,Liu, Huibiao.,...&Liu, Shengzhong .(2018).Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells.ADVANCED MATERIALS INTERFACES,5(2).
MLA	Zhang, Xisheng,et al."Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells".ADVANCED MATERIALS INTERFACES 5.2(2018).