Highly efficient mixed-halide mixed-cation perovskite solar cells based on rGO-TiO2 composite nanofibers

被引：36
作者：
Patil, Jyoti V. [1 ,2 ]
Mali, Sawanta S. [2 ]
Patil, Akhilesh P. [4 ]
Patil, Pramod S. [3 ,4 ]
Hong, Chang Kook [1 ,2 ]
机构：
[1] Chonnam Natl Univ, Optoelect Convergence Res Ctr, Gwangju 61186, South Korea
[2] Chonnam Natl Univ, Dept Adv Chem Engn, Polymer Energy Mat Lab, Gwangju 61186, South Korea
[3] Shivaji Univ, Dept Phys, Thin Film Mat Lab, Kolhapur 416004, Maharashtra, India
[4] Shivaji Univ, Sch Nanosci & Technol, Kolhapur 416004, Maharashtra, India
来源：
ENERGY | 2019年 / 189卷
基金：
新加坡国家研究基金会;
关键词：
Perovskite solar cells; Electron transporting materials; Role of rGO in TiO2 nanofibers; Large grain size; High-efficiency; TIO2; NANOFIBERS; RUTILE TIO2; GRAPHENE; PERFORMANCE; OXIDE; NANOCOMPOSITES; LAYERS;
D O I：
10.1016/j.energy.2019.116396
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this investigation, the electrospun reduced graphene oxide-titanium oxide composite nanofibers as an electron transporting materials have been employed for the perovskite solar cells. The synthesized electron transporting materials have been used for the fabrication of mixed-cation lead mixed-halide (FAPbI(3))(0.85)(MAPbBr(3))(0.15) perovskite solar cells. The influence of reduced graphene oxide on titanium oxide nanofibers and their morphological and electronic properties have been investigated in detail. The optimized device having FTO/Bl-TiO2/rGO(4)-TiO2/(FAPbI(3))(0.85)(MAPbBr(3))(0.15)/spiro-MeOTAD/Au configuration exhibited a eta = 17.66% power conversion efficiency with an open circuit voltage of 1.070 V, short circuit current density of 22.16 mAcm(-2) and fill factor of 0.754. This obtained efficiency is much higher than that of mesoporous-titanium oxide (14.39%), pristine-titanium oxide nanofibers (15.82%) and other reduced graphene oxide-titanium oxide composite nanofibers based electron transporting materials. (C) 2019 Elsevier Ltd. All rights reserved.
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页数：9
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