Highly transmitted silver nanowires-SWCNTs conductive flexible film by nested density structure and aluminum-doped zinc oxide capping layer for flexible amorphous silicon solar cells

被引:152
作者
Gao, Shunliang [1 ]
Zhao, Xiaohui [1 ]
Fu, Qi [1 ]
Zhang, Tianchi [1 ]
Zhu, Jun [1 ]
Hou, Fuhua [1 ]
Ni, Jian [2 ]
Zhu, Chengjun [1 ]
Li, Tiantian [1 ]
Wang, Yanlai [1 ]
Murugadoss, Vignesh [3 ,4 ]
Mersal, Gaber A. M. [5 ]
Ibrahim, Mohamed M. [5 ]
El-Bahy, Zeinhom M. [6 ]
Huang, Mina [4 ,7 ]
Guo, Zhanhu [4 ]
机构
[1] Inner Mongolia Univ, Key Lab Semicond Photovolta Technol Univ Inner Mo, Coll Phys Sci & Technol, Hohhot 010021, Peoples R China
[2] Nankai Univ, Sch Elect Informat & Opt Engn, Dept Elect Sci & Technol, Tianjin 300350, Peoples R China
[3] Engn Multifunct Composites EMC Nanotech LLC, Adv Mat Div, Knoxville, TN 37934 USA
[4] Univ Tennessee, Dept Chem & Bimol Engn, Integrated Composites Lab ICL, Knoxville, TN 37996 USA
[5] Taif Univ, Coll Sci, Dept Chem, POB 11099, At Taif 21944, Saudi Arabia
[6] Al Azhar Univ, Fac Sci, Dept Chem, Cairo 11884, Egypt
[7] Taiyuan Univ Sci & Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
来源
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2022年 / 126卷
基金
中国国家自然科学基金;
关键词
Silver nanowires-SWCNTs; Nested density; TCFs; Flexible substrate; Photovoltaic devices; TRANSPARENT ELECTRODES; GRAPHENE; STABILITY; SUBSTRATE; ADHESION;
D O I
10.1016/j.jmst.2022.03.012
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Indium tin oxide (ITO) is widely used in transparent conductive films (TCFs); however, several disadvantages, such as high cost and toxicity of indium, limit its applications. Therefore, it is necessary to develop other materials that can replace ITO. Silver nanowires or single walled carbon nanotubes (SWCNTs) have attracted considerable interest owing to their unique electrical, optical, and thermal stabilities, and thus, they are ideal for transparent electrodes for flexible or stretchable devices. In this study, we develop a novel architecture of composite TCFs on a polyethylene naphthalate (PEN) flexible substrate. Herein, the silver nanowires-SWCNTs films with nested density structure were fabricated through ultrasonic spraying technology by varying the spraying width. For achieving enhanced transmittance, we combined the larger irregular grids and holes with fewer nanowires stacked in the longitudinal direction, more optical channels, and good carrier transport. Thereafter, aluminum-doped zinc oxide (AZO) was used as capping to the structure for enhancing the optical properties of the TCFs. The silver nanowires-SWCNTs/AZO (ASA) bilayer was obtained in the optimized architecture, which showed superior optoelectronic performance to that shown by commercial ITO with a high optical transmittance of 92% at the wavelength of 550 nm and low sheet resistance of 17 St/sq. In the specially structured conductive film, the significant improvement in the transmittance and uniformity of the sheet resistance was attributed to the effective nanowire junction contact compared to that in ordinary structure of silver nanowires, which reduced the mean density of small clusters of nanowires. Compared with the silver nanowires-SWCNTs films, the ASA bilayer film exhibited excellent resistance to boiling, mechanical bending (10,0 0 0 cycles), and CO 2 plasma. Moreover, the sheet resistance of ASA changed slightly after the tape tests, thereby illustrating a strong adhesion to the PEN substrate after the enclosure of AZO. Meanwhile, the AZO capping layer can enhance the optical transmittance between 600 and 1500 nm. In addition, the amorphous silicon photovoltaic devices with flexible ASA TCFs exhibited a power conversion efficiency (PCE) of 8.67%. After bending for 30 0 0 times, the PCE was decreased to 8.20%, thereby demonstrating the potential of developed films to replace traditional ITO. ?? 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码:152 / 160
页数:9
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