Use of modified PEDOT:PSS/Graphene oxide dispersions as a hole transport layer for inverted bulk-heterojunction organic solar cells

被引:17
作者
Nguyen, Dinh Cung Tien [1 ]
Mai, Van-Dung [1 ]
Van-Huong Tran [2 ]
Vu, Van-Phu [1 ]
Lee, Soo-Hyoung [1 ,3 ]
机构
[1] Jeonbuk Natl Univ, Sch Semicond & Chem Engn, 567 Baekje Daero, Jeollabuk Do 54896, South Korea
[2] Hanoi Univ Sci & Technol, Sch Mech Engn, 1 Dai Co Viet St, Hanoi 100000, Vietnam
[3] Jeonbuk Natl Univ, Sch Chem Engn, 567 Baekje Daero, Jeonju Si 54896, Jeollabuk Do, South Korea
基金
新加坡国家研究基金会;
关键词
PEDOT; PSS; Graphene oxide; Solution-processing; Hole transport layers; Inverted organic solar cells; GRAPHENE OXIDE; PHOTOCATALYTIC ACTIVITIES; EXTRACTION LAYERS; BUFFER LAYER; PEDOT-PSS; PERFORMANCE; SUPERCAPACITOR; NANOCOMPOSITE; NANOPARTICLES; CONDUCTIVITY;
D O I
10.1016/j.orgel.2021.106388
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The thin-film fabrication of PEDOT:PSS-based dispersions via solution-processing techniques is critical to developing a hole transporting layer (HTL) for inverted organic photovoltaic (iOPV) devices. However, the highly hydrophilic nature of PEDOT:PSS solutions is a drawback that strongly inhibits their usage as HTLs in iOPV devices. In this study, the hydrophilic nature of PEDOT:PSS solutions was tuned successfully using various solvents and surfactants. Additionally, the dispersion of graphene oxide (GO) colloidal suspensions within the PEDOT:PSS was used to enhance the electrical conductivity of the PEDOT:PSS. These modifications have the benefit of enabling effective coating of a PEDOT:PSS/GO blend as an HTL on top of a hydrophobic photoactive layer, resulting in a homogeneous, conductive thin film for iOPV devices. In order to further optimize the ratio of PEDOT:PSS to GO, the effect of the GO dosage is investigated systematically, which demonstrated the influence of this ratio on the overall power conversion efficiency of devices. The results demonstrate that the additive- and GO-modified PEDOT:PSS can lead to enhancement of device efficiency, mainly due to enhanced HTL film morphology, high electrical conductivity, high adhesiveness, and well-matched bandgap energy. We believe that the modified PEDOT:PSS/GO is a prospective candidate for utilization in the HTL for iOPV devices in nextgeneration energy conversion applications and other potential energy management devices.
引用
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页数:8
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