Manipulating the interfacial energetics of n-type silicon photoanode for efficient water oxidation | |
Yao, Tingting1,2; Chen, Ruotian1,2,4; Li, Junjie5; Han, Jingfeng1,2,3; Qin, Wei1,2; Wang, Hong1,2,4; Shi, Jingying1,2; Fan, Fengtao1,2,3; Li, Can1,2,3 | |
刊名 | Journal of the american chemical society |
2016-10-19 | |
卷号 | 138期号:41页码:13664-13672 |
ISSN号 | 0002-7863 |
DOI | 10.1021/jacs.6b07188 |
通讯作者 | Li, can(canli@dicp.ac.cn) |
英文摘要 | The photoanodes with heterojunetion behavior could enable the development of solar energy conversion, but their performance largely suffers from the poor charge separation and transport process through the multiple interfacial energy levels involved. the question is how to efficiently manipulate these energy levels. taking the n-si schottky photoanode as a prototype, the undesired donor-like interfacial defects and its adverse effects on charge transfer in n-si/ito photoanode are well recognized and diminished through the treatment on electronic energy level. the obtained n-si/tiox/ito schottky junction exhibits a highly efficient charge transport and a barrier height of 0:95 ev, which is close to the theoretical optimum for n-si/ito schottky contact. then, the holes extraction can be further facilitated through the variation of surface energy level, with the niooh coated ito layer. this is confirmed by a 115% increase in surface photovoltage of the photoanodes. eventually, an unprecedentedly low onset potential of 0.9 v (vs rhe) is realized for water oxidation among n si photoanodes. for the water oxidation reaction, the n-si/tiox/ito/niooh photoanode presents a charge separation efficiency up to 100% and an injection efficiency greater than 90% at a wide voltage range. this work identifies the important role of interfacial energetics played in photoelectrochemical conversion. |
WOS关键词 | LAYERED DOUBLE HYDROXIDES ; SCHOTTKY BARRIERS ; OXIDE-FILMS ; EVOLUTION ; OXYGEN ; TIO2 ; SPECTROSCOPY ; CAPACITANCE ; JUNCTION ; ELECTROCATALYST |
WOS研究方向 | Chemistry |
WOS类目 | Chemistry, Multidisciplinary |
语种 | 英语 |
出版者 | AMER CHEMICAL SOC |
WOS记录号 | WOS:000385992100036 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2375001 |
专题 | 中国科学院大学 |
通讯作者 | Li, Can |
作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat iChEM, Zhongshan Rd 457, Dalian 116023, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Int Iberian Nanotechnol Lab INL, Ave Mestre Jose Veiga, P-4715330 Braga, Portugal |
推荐引用方式 GB/T 7714 | Yao, Tingting,Chen, Ruotian,Li, Junjie,et al. Manipulating the interfacial energetics of n-type silicon photoanode for efficient water oxidation[J]. Journal of the american chemical society,2016,138(41):13664-13672. |
APA | Yao, Tingting.,Chen, Ruotian.,Li, Junjie.,Han, Jingfeng.,Qin, Wei.,...&Li, Can.(2016).Manipulating the interfacial energetics of n-type silicon photoanode for efficient water oxidation.Journal of the american chemical society,138(41),13664-13672. |
MLA | Yao, Tingting,et al."Manipulating the interfacial energetics of n-type silicon photoanode for efficient water oxidation".Journal of the american chemical society 138.41(2016):13664-13672. |
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