Functionalized 2D-MoS2-Incorporated Polymer Ternary Solar Cells: Role of Nanosheet-Induced Long-Range Ordering of Polymer Chains on Charge Transport,ACS Applied Materials & Interfaces

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Functionalized 2D-MoS2-Incorporated Polymer Ternary Solar Cells: Role of Nanosheet-Induced Long-Range Ordering of Polymer Chains on Charge Transport
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1021/acsami.7b08725
Razi Ahmad _{1,

2} , Ritu Srivastava ₁ , Sushma Yadav ₂ , Suresh Chand ₁ , Sameer Sapra ₂

Affiliation

In this paper, we demonstrated the enhancement in power conversion efficiency (PCE) of solar cells based on poly(3-hexylthiophene-2,5-diyl) (P3HT)/[6,6]-phenyl C₇₁ butyric acid methyl ester (PC₇₁BM) by incorporation of functionalized 2D-MoS₂ nanosheets (NSs) as an additional charge-transporting material. The enhancement in PCE of ternary solar cells arises due to the synergic enhancement in exciton dissociation and the improvement in mobility of both electrons and holes through the active layer of the solar cells. The improved hole mobility is attributed to the formation of the long-range ordered nanofibrillar structure of polymer phases and improved crystallinity in the presence of 2D-MoS₂ NSs. The improved electron mobility arises due to the highly conducting 2D network of MoS₂ NSs which provides additional electron transport channels within the active layer. The nanosheet-incorporated ternary blend solar cells exhibit 32% enhancement in PCE relative to the binary blend P3HT/PC₇₁BM.

中文翻译：

功能化的2D-MoS ₂结合的聚合物三元太阳能电池：纳米片诱导的聚合物链在电荷传输上的远距离排序的作用

在本文中，我们证明了基于聚（3-己基噻吩-2,5-二基）（P3HT）/ [6,6]-苯基C ₇₁丁酸甲酯（ PC ₇₁ BM），通过加入功能化的2D-MoS ₂纳米片（NSs）作为附加的电荷传输材料。三元太阳能电池的PCE增强是由于激子解离的协同增强以及电子和空穴通过太阳能电池活性层的迁移率的提高而引起的。改善的空穴迁移率归因于聚合物相的长程有序纳米原纤维结构的形成以及在2D-MoS ₂存在下结晶度的提高NSs。电子迁移率的提高归因于MoS ₂ NSs的高导电2D网络，该网络在有源层内提供了额外的电子传输通道。相对于二元共混物P3HT / PC ₇₁ BM，掺有纳米片的三元共混太阳能电池的PCE增强了32％。

更新日期：2017-09-20

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