Improvement of TiO2 Cathode Buffer Layer to The Performance of Rubrene/C70 Organic Solar Cells

ZHANG Li-zhong; WU Ming-xiao; TIAN Jin-peng; WU Bu-jun; XIE Wei-guang; LIU Peng-yi

doi:10.3788/fgxb20173803.0359

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Improvement of TiO₂ Cathode Buffer Layer to The Performance of Rubrene/C₇₀ Organic Solar Cells

更新时间：2020-08-12

- Improvement of TiO₂ Cathode Buffer Layer to The Performance of Rubrene/C₇₀ Organic Solar Cells
- Chinese Journal of Luminescence Vol. 38, Issue 3, Pages: 359-364(2017)
- 作者机构：
  
  暨南大学物理学系广州市真空薄膜技术与新能源材料重点实验室, 思源实验室, 广东广州 510632
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(61674070,11574119);Natur
- DOI：10.3788/fgxb20173803.0359
  CLC： TP394.1;TH691.9
- Received：19 September 2016，
  
  Revised：18 October 2016，
  
  Published：05 March 2017
- 稿件说明：
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张利忠, 吴明晓, 田金鹏等. TiO2阴极缓冲层对Rubrene/C70有机太阳能电池性能的改善[J]. 发光学报, 2017,38(3): 359-364

ZHANG Li-zhong, WU Ming-xiao, TIAN Jin-peng etc. Improvement of TiO2 Cathode Buffer Layer to The Performance of Rubrene/C70 Organic Solar Cells[J]. Chinese Journal of Luminescence, 2017,38(3): 359-364
张利忠, 吴明晓, 田金鹏等. TiO2阴极缓冲层对Rubrene/C70有机太阳能电池性能的改善[J]. 发光学报, 2017,38(3): 359-364 DOI： 10.3788/fgxb20173803.0359.

ZHANG Li-zhong, WU Ming-xiao, TIAN Jin-peng etc. Improvement of TiO2 Cathode Buffer Layer to The Performance of Rubrene/C70 Organic Solar Cells[J]. Chinese Journal of Luminescence, 2017,38(3): 359-364 DOI： 10.3788/fgxb20173803.0359.

摘要

为了提高有机太阳能电池（OSCs）的性能，增强器件在空气中的稳定性，研究了TiO

薄膜作为阴极缓冲层对OSCs器件性能的影响。制备了结构为ITO/TiO

/Rubrene/MoO

/Al的OSCs器件。首先，通过测量器件效率，考察了TiO

薄膜对Rubrene/C

电池的性能影响。接着，通过控制TiO

薄膜厚度，研究了TiO

厚度对器件性能的影响。实验结果显示，当TiO

修饰层厚度比较薄时，器件的各性能参数较低，随着TiO

厚度的不断增加，器件的各性能参数呈上升趋势；当TiO

厚度为81 nm时，器件的各性能参数达到最佳，器件的功率转换效率为1.09%，电流密度为2.55 mAcm

-2

，开路电压为0.88 V，填充因子为48.69%；当TiO

厚度继续增加时，器件的各性能参数开始下降。对比没有TiO

阴极修饰层的器件，最优时的

、

、FF和PCE分别提高了37%、21%、17%和91%，并阐述了性能提高的原因。

Abstract

To improve the performance of organic solar cells (OSCs) and enhance their stability in the air

the effect of TiO

film as cathode buffer layer on the performance of OSCs was studied. The cells with a structure of ITO/TiO

/Rubrene/MoO

/Al were fabricated. The influence of TiO

on the cell was investigated by measuring the device efficiency. The experimental results show that the performance of cell is on the rise with the increase of the thickness of TiO

. when the thickness of TiO

is 81 nm

the performance parameters are the best (power conversion efficiency current density

open circuit voltage and fill factor are 1.09%

2.55 mAcm

-2

0.88 V

48.69%

respectively)

and the cell performance declines with the continued increasing of TiO

thickness. Compared with the device without TiO

layer

the optimal

FF and PCE of the cells increased by 37%

21%

17% and 91%

respectively. and the reasons for the improvement were discussed.

关键词

Keywords

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