Air-stable synthesis of near-infrared AgInSe2 quantum dots for sensitized solar cells

doi:10.1016/j.colsurfa.2021.127071

	Air-stable synthesis of near-infrared AgInSe2 quantum dots for sensitized solar cells
	Luo, Liping 1; Huang, Heng 1; Feng, Pengyu 1; Pan, Congyi 1; Kong, Fantai 2; Zhai, Lanlan 1
刊名	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
	2021-10-05
卷号	626
关键词	Ligand exchange QD sensitized solar cells Near-infrared AglnSe(2) QDs
ISSN号	0927-7757
DOI	10.1016/j.colsurfa.2021.127071
通讯作者	Pan, Congyi(546683561@qq.com) ; Zhai, Lanlan(zhaill@wzu.edu.cn)
英文摘要	The synthesis of highly photoluminescent quantum dots (QDs) is critical for QD sensitized solar cells. As a typical I-III-VI compound, AgInSe2 QDs with high quality were often synthesized by the hot-injection method with a stock solution of selenium powder in oleylamine, trioctylphosphine used as capping agent. This work introduces selenium dioxide as a selenium source to synthesize high-quality AglnSe(2) with the tunable composition by a heating-up method in air. The gradient compositions of AglnSe(2) QDs were achieved by the control of the relative feeding ratio of Ag/In precursors. The emission peaks of AglnSe(2) QDs locate between 740 similar to 1080 nm with as longer lifetime as 450 ns, depending on the ratio of Ag/In in AgInSe2. The ligand exchange was adapted to assist adsorption onto the TiO2 photoanode. Under a complete solar illumination, AgInSe2 QDs-sensitized solar cells demonstrated the best power conversion efficiency of 3.31%. The current density-voltage curves of the best solar cells showed that the short circuit current was 18.16 mA.cm(-2), the open-circuit voltage was 0.35 V, and the fill factor was 51%. The improved photoelectric performance of the AglnSe(2) QD is thought as the attribution of theirs enhanced PL lifetime and broader spectral response reaching 1100 nm. This method proposes a new strategy for the synthesis of AglnSe(2) QDs with high quality.
资助项目	National Natural Science Foundation of China[51772218] ; National Natural Science Foundation of China[51572199] ; Key Lab of Novel Thin Film Solar Cells, Chinese Academy of Sciences[KF201603] ; Graduate Scientific Research Foundation of Wenzhou University
WOS关键词	COUNTER-ELECTRODE ; EFFICIENCY ; NANOCRYSTALS ; PHOTOLUMINESCENCE ; CHALCOPYRITE ; LUMINESCENT ; TRANSITIONS ; INJECTION ; WATER
WOS研究方向	Chemistry
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000685967000006
资助机构	National Natural Science Foundation of China ; Key Lab of Novel Thin Film Solar Cells, Chinese Academy of Sciences ; Graduate Scientific Research Foundation of Wenzhou University
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124389]
专题	中国科学院合肥物质科学研究院
通讯作者	Pan, Congyi; Zhai, Lanlan
作者单位	1.Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325027, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Appl Technol, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230088, Peoples R China
推荐引用方式 GB/T 7714	Luo, Liping,Huang, Heng,Feng, Pengyu,et al. Air-stable synthesis of near-infrared AgInSe2 quantum dots for sensitized solar cells[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2021,626.
APA	Luo, Liping,Huang, Heng,Feng, Pengyu,Pan, Congyi,Kong, Fantai,&Zhai, Lanlan.(2021).Air-stable synthesis of near-infrared AgInSe2 quantum dots for sensitized solar cells.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,626.
MLA	Luo, Liping,et al."Air-stable synthesis of near-infrared AgInSe2 quantum dots for sensitized solar cells".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 626(2021).