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| 1 | Interfacial engineering of printable bottom back metal electrodes for full-solution processed flexible organic solar cells显示文摘Printing of metal bottom back electrodes of flexible organic solar cells(FOSCs) at low temperature is of great significance to realize the full-solution fabrication technology. However, this has been difficult to achieve because often the interfacial properties of those printed electrodes, including conductivity, roughness, work function,optical and mechanical flexibility, cannot meet the device requirement at the same time. In this work, we fabricate printed Ag and Cu bottom back cathodes by a low-temperature solution technique named polymer-assisted metal deposition(PAMD) on flexible PET substrates. Branched polyethylenimine(PEI) and ZnO thin films are used as the interface modification layers(IMLs) of these cathodes. Detailed experimental studies on the electrical, mechanical, and morphological properties, and simulation study on the optical properties of these IMLs are carried out to understand and optimize the interface of printed cathodes. We demonstrate that the highest power conversion efficiency over 3.0% can be achieved from a full-solution processed OFSC with the device structure being PAMDAg/PEI/P3 HT:PC_(61)BM/PH1000. This device also acquires remarkable stability upon repeating bending tests. | Hongyu Zhen Kan Li Yaokang Zhang Lina Chen Liyong Niu Xiaoling Wei Xu Fang Peng You Zhike Liu Dongrui Wang Feng Yan Zijian Zheng | 2018 | Journal of Semiconductors2018，39，1： | 2 |
| 2 | Vacuum-free fabrication of high-performance semitransparent perovskite solar cells via e-glue assisted lamination process显示文摘From a base material of conductive polymer(poly-(3,4-ethylenedioxythiophene):poly(styrenesulfonate),PEDOT:PSS),a flexible and high-conductivity(as low as 45Ω/sq)transparent electrode was fabricated on polydimethylsiloxane elastomer by an acid treatment and transfer process.Combined with the D-sorbitol-doped PEDOT:PSS electric glue,we successfully demonstrated a vacuum-free and ambient lamination fabrication process for semi-transparent perovskite solar cells using triple cation Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3perovskite.By this manufacturing-friendly lamination process,we fabricated semitransparent perovskite solar cell devices with power conversion efficiencies up to 16.4%and variable transparencies. | Hengkai Zhang Yaokang Zhang Guang Yang Zhiwei Ren Wei Yu Dong Shen Chun-Shing Lee Zijian Zheng Gang Li | 2019 | Science China Chemistry2019，62，7： | 2 |
| 3 | Surface modification by graphene oxide:An efficient strategy to improve the performance of activated carbon based supercapacitors显示文摘We demonstrate an efficient and cost-effective strategy to improve electrochemical properties of AC based electrode materials. A series of graphene oxide(GO)-modified activated carbon(AC) composites(GO@ACs) have been prepared as electrode materials for supercapacitors(SCs). In GO@ACs, AC particles anchored on the surface of GO sheets which were synchronously reduced during charge/discharge process, and formed a 3D-conductive network. Electrochemical analyses revealed that 2.5 wt% GO@AC,which exhibited improved electrical conductivity and high specific capacitance at large current density in organic electrolyte, is a promising electrode material for high-performance SCs. At 6 A/g, the specific capacitance of 2.5 wt% GO@AC increased by 249.5% in comparison with that of AC. | Weishi Du Yaokang Lv Hongliang Lu Zaihua Chen Dominic S.Wright Cheng Zhang | 2017 | Chinese Chemical Letters2017，28，12： | 1 |
| 4 | Solution process formation of high performance,stable nanostructured transparent metal electrodes via displacement-diffusion-etch process显示文摘Transparent electrodes(TEs)with high chemical stability and excellent flexibility are critical for flexible optoelectronic devices,such as photodetectors,solar cells,and light-emitting diodes.Ultrathin metal electrode(thickness less than 20 nm)has been a promising TE candidate,but the fabrication can only be realized by vacuum-based technologies to date,and require tedious surface engineering of the substrates,which are neither ideal for polymeric based flexible applications nor suitable for roll-to-roll large-scale manufacture.This paper presents high-performance nanostructured transparent metal electrodes formation via displacement-diffusion-etch(DDE)process,which enables the solution-processed sub-20-nm-thick ultrathin gold electrodes(UTAuEs)on a wide variety of hard and soft substrates.UTAuEs fabricated on flexible polyethylene terephthalate(PET)substrates show a high chemical/environmental stability and superior bendability to commercial flexible indiumtin-oxide(ITO)electrodes.Moreover,flexible organic solar cells made with UTAuEs show similar power conversion efficiency but much enhanced flexibility,in comparison to that of ITO-based devices. | Yaokang Zhang Xuyun Guo Jiaming Huang Zhiwei Ren Hong Hu Peng Li Xi Lu Zhongwei Wu Ting Xiao Ye Zhu Gang Li Zijian Zheng | 2022 | npj Flexible Electronics2022，6，1： | 0 |
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