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Solution processed inorganic V2O (x) as interfacial function materials for inverted planar-heterojunction perovskite solar cells with enhanced efficiency
Peng, HT; Sun, WH; Li, YL; Ye, SY; Rao, HX; Yan, WB; Zhou, HP; Bian, ZQ; Huang, CH
2016-10-01
Source PublicationNANO RESEARCH
ISSN1998-0124
Volume9Issue:10Pages:2960-2971
AbstractAn inverted planar heterojunction perovskite solar cell (PSC) is one of the most competitive photovoltaic devices exhibiting a high power conversion efficiency (PCE) and nearly free hysteresis in the voltage-current output. However, the band alignment between the transport materials and the perovskite absorber has not been optimized, resulting in a lower open-circuit voltage (V (oc)) than that of regular PSCs. To address this issue, we tune the band alignment in perovskite photovoltaic architecture by introducing bilayer structured transport materials, e.g., the hole transport material poly(ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/V2O5. In this study, solution processed inorganic V2O (x) interlayer is incorporated into PEDOT:PSS for achieving improved film surface properties as well as optical and electrical properties. For example, the work function (WF) was changed from 5.1 to 5.4 eV. A remarkably high PCE of 17.5% with nearly free hysteresis and a stabilized efficiency of 17.1% have been achieved. Electronic impedance spectra (EIS) demonstrate a significant increase in the recombination resistance after introducing the interlayer, associated with the high V (oc) output value of 1.05 V. Transient photocurrent and photovoltage measurements indicate that a comparable charge transport process and an inhibited recombination process occur in the PSC with the introduction of the V2O (x) interlayer.
Keywordperovskite solar cells vanadium oxide hole transport layer band alignment hysteresis
MOST Discipline CatalogueChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
DOI10.1007/s12274-016-1181-z
Indexed BySCI
Language英语
WOS SubjectChemistry ; Physical ; Nanoscience & Nanotechnology ; Materials Science ; Multidisciplinary ; Physics ; Applied
WOS IDWOS:000385194100012
PublisherTSINGHUA UNIV PRESS
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/41983
Collection工程塑料实验室
Affiliation1.Zhou, HP (reprint author), Peking Univ, Dept Energy & Resources Engn, Coll Engn, Beijing 100871, Peoples R China.
2.Bian, ZQ (reprint author), Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China.
3.Zhou, HP (reprint author), Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China.
Recommended Citation
GB/T 7714
Peng, HT,Sun, WH,Li, YL,et al. Solution processed inorganic V2O (x) as interfacial function materials for inverted planar-heterojunction perovskite solar cells with enhanced efficiency[J]. NANO RESEARCH,2016,9(10):2960-2971.
APA Peng, HT.,Sun, WH.,Li, YL.,Ye, SY.,Rao, HX.,...&Huang, CH.(2016).Solution processed inorganic V2O (x) as interfacial function materials for inverted planar-heterojunction perovskite solar cells with enhanced efficiency.NANO RESEARCH,9(10),2960-2971.
MLA Peng, HT,et al."Solution processed inorganic V2O (x) as interfacial function materials for inverted planar-heterojunction perovskite solar cells with enhanced efficiency".NANO RESEARCH 9.10(2016):2960-2971.
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