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题名: Solution-Processed 8-Hydroquinolatolithium as Effective Cathode Interlayer for High-Performance Polymer Solar Cells
作者: Liu, WQ; Liang, T; Chen, Q; Yu, ZK; Zhang, YY; Liu, YJ; Fu, WF; Tang, F; Chen, LW(陈立桅); Chen, HZ
通讯作者: Chen, HZ
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2016
DOI: 10.1021/acsami.6b00327
卷: 8, 期:14
收录类别: SCI ; EI
文章类型: 期刊论文
部门归属: 纳米研究国际实验室
英文摘要: Solution-processed 8-hydroxyquinolinatolithium (s-Liq) was successfully applied as an efficient cathode interlayer in bulk heterojunction polymer solar cells (PSCs), giving rise to enhancement in device performance. The ultraviolet photoelectron spectra results revealed that the presence of s-Liq could lower work function of Al cathode, allowing for the ohmic contacts with the fullerene acceptor for better electron extraction and also a larger work function difference between the two electrodes, which leads to an increase in open-circuit voltage (V-oc). Scanning Kelvin probe microscopy study on the surface potential of active layers suggested that an interfacial dipole was formed in the s-Liq interlayer between the active layer and the Al cathode, which enhanced the intrinsic built-in potential in the device for better charge transportation and extraction. Consequently, the V-oc, fill factor, and current density of the device can be improved by the introduction of s-Liq interlayer, leading to a power conversion efficiency (PCE) improvement. With PTB7 (or PTB7-Th) as the donor and PC71BM as the acceptor, the s-Liq-based PSC devices exhibited a PCE of 8.37% (or 9.04%), much higher than those of devices with the evaporated Liq (7.62%) or commonly used PFN (8.14%) as the cathode interlayer. Moreover, the s-Liq-based devices showed good stability, maintaining 75% (in N-2) and 45% (in air) of the initial PCE after 7 days, respectively. These results suggest the great potential of s-Liq as cathode interlayer material for high-performance solar cells application.
关键词[WOS]: ELECTRON INJECTION LAYER ; POWER CONVERSION EFFICIENCY ; LIGHT-EMITTING DEVICES ; OPEN-CIRCUIT VOLTAGE ; BUFFER LAYER ; ORGANIC PHOTOVOLTAICS ; INTERFACE LAYER ; FILL FACTOR ; ENHANCEMENT ; COMPLEXES
语种: 英语
JCR小类分区: 一区
WOS记录号: WOS:000374274900048
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/4770
Appears in Collections:纳米研究国际实验室_陈立桅团队_期刊论文

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Recommended Citation:
Liu, WQ,Liang, T,Chen, Q,et al. Solution-Processed 8-Hydroquinolatolithium as Effective Cathode Interlayer for High-Performance Polymer Solar Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(14).
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