Optical Performance Improving of Organic Film Solar Cell by Multiple Surface Coating

CHEN Yun-long; ZHENG Jia-jin; JIANG Yu-hong

doi:10.3788/fgxb20143506.0710

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Optical Performance Improving of Organic Film Solar Cell by Multiple Surface Coating

更新时间：2020-08-12

- Optical Performance Improving of Organic Film Solar Cell by Multiple Surface Coating
- Chinese Journal of Luminescence Vol. 35, Issue 6, Pages: 710-716(2014)
- 作者机构：
  
  南京邮电大学光电工程学院,江苏南京,210023
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143506.0710
  CLC： O472+.3
- Received：18 February 2014，
  
  Revised：22 March 2014，
  
  Published：03 June 2014
- 稿件说明：
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陈云龙, 郑加金, 蒋宇宏. 镀膜法改善有机薄膜太阳能电池光学性能[J]. 发光学报, 2014,35(6): 710-716

CHEN Yun-long, ZHENG Jia-jin, JIANG Yu-hong. Optical Performance Improving of Organic Film Solar Cell by Multiple Surface Coating[J]. Chinese Journal of Luminescence, 2014,35(6): 710-716
陈云龙, 郑加金, 蒋宇宏. 镀膜法改善有机薄膜太阳能电池光学性能[J]. 发光学报, 2014,35(6): 710-716 DOI： 10.3788/fgxb20143506.0710.

CHEN Yun-long, ZHENG Jia-jin, JIANG Yu-hong. Optical Performance Improving of Organic Film Solar Cell by Multiple Surface Coating[J]. Chinese Journal of Luminescence, 2014,35(6): 710-716 DOI： 10.3788/fgxb20143506.0710.

摘要

有机活性材料的低载流子迁移率使得有机光伏电池的电极收集到的电荷较少。增加活性层光吸收能够增加激子的产生数从而增加电极收集到的电荷，提升器件的性能。通过对器件模拟的方法，研究以P3HT：PCBM为活性层的薄膜太阳能电池的光学性能。在此基础上，提出采用镀多层高反射膜的方法改善电池器件的光学性能。结果表明：活性层厚度对电池器件的光吸收起到主导作用；镀多层高反射膜在活性层厚度小于160 nm、Ag厚度小于20 nm时能大幅度改善电池器件的光学性能，光生激子总数随活性层厚度的增加而迅速增多，并且在活性层厚度约为150 nm时为一个最佳值。

Abstract

Low carrier mobility of organic materials limits the number of carriers extracted by electrodes. By increasing light absorption in the active layer

more excitons could be produced so as to increase current which extracted by electrodes. And the performance would be improved by this way. Photoelectric field distribution and excitons generated in P3HT:PCBM active layer were studied by the numerical modeling method. Based on it

the method of coating multilayer high reflectance films behind the cathode was proposed. Simulations reveal that the thickness of active layer plays a leading role in optical absorption. When the thickness of active layer is less than 160 nm and the thickness of Ag is less than 20 nm

coating multilayer high reflectance films could improve the optical performance of solar cells largely. Excitons increase fast with the thickness of active layer

and the number of excitons reaches an optimal value when the thickness of active layer is about 150 nm.

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references

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