具有接近15%能量转换效率的有机太阳能电池

崔勇; 姚惠峰; 杨晨熠; 张少青; 侯剑辉

doi:10.11777/j.issn1000-3304.2018.17297

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具有接近15%能量转换效率的有机太阳能电池

研究论文 | 更新时间：2021-01-26

- 具有接近15%能量转换效率的有机太阳能电池
  增强出版
- Organic Solar Cells with an Efficiency Approaching 15%
- 高分子学报 2018年第2期页码：223-230
- 作者机构：
  
  中国科学院化学研究所高分子物理与化学国家重点实验室北京 100190
- 作者简介：
  
  侯剑辉, E-mail: hjhzlz@iccas.ac.cn Jian-hui Hou, E-mail: hjhzlz@iccas.ac.cn
- 基金信息：
  
  国家自然科学基金(91633301);国家自然科学基金(51673201);国家自然科学基金(91333204);国家自然科学基金(21325419);中国科学院B类先导专项(XDB12030200)
- DOI：10.11777/j.issn1000-3304.2018.17297
  中图分类号：
- 纸质出版日期：2018-2-20，
  
  收稿日期：2017-10-26，
  
  修回日期：2017-11-9，
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崔勇, 姚惠峰, 杨晨熠, 张少青, 侯剑辉. 具有接近15%能量转换效率的有机太阳能电池[J]. 高分子学报, 2018,(2):223-230.

Cui Yong, Yao Hui-feng, Yang Chen-yi, Zhang Shao-qing, Hou Jian-hui. Organic Solar Cells with an Efficiency Approaching 15%[J]. Acta Polymerica Sinica, 2018,(2):223-230.
崔勇, 姚惠峰, 杨晨熠, 张少青, 侯剑辉. 具有接近15%能量转换效率的有机太阳能电池[J]. 高分子学报, 2018,(2):223-230. DOI： 10.11777/j.issn1000-3304.2018.17297.

Cui Yong, Yao Hui-feng, Yang Chen-yi, Zhang Shao-qing, Hou Jian-hui. Organic Solar Cells with an Efficiency Approaching 15%[J]. Acta Polymerica Sinica, 2018,(2):223-230. DOI： 10.11777/j.issn1000-3304.2018.17297.

摘要

对叠层有机太阳能电池中的前、后子电池之间的光谱匹配性进行了优化调制.最终，选用带隙为1.24 eV的PTB7-Th：IEICO-4F作为后电池，带隙为1.59 eV的J52-2F：IT-M作为前电池制备了叠层电池.在这个叠层有机太阳能电池中，这2个子电池不仅具有互补的吸收光谱，还具有高的外量子效率，实现了对300~1000 nm范围内太阳发射光谱的高效利用.此外，前、后电池的能量损失均得到有效的控制，分别为0.64和0.53 eV.因此，从光伏性能具体参数上来看，本文制备的叠层器件兼具了高短路电流密度（

）和高开路电压（

）的优势，分别达到13.3 mA/cm

和1.65 V.该电池在本实验室内部测试的光伏效率高达14.9%，封装之后效率略有降低，由中国计量科学研究院（NIM）验证的光伏效率达到14.0%.这是目前有机光伏领域的国际最高结果.

Abstract

In this work

we focus on the fine-tuning of absorption spectra to achieve well-matched light response and reducing the energy loss (

loss

opt

-e

where

opt

is the optical bandgap

and

is the open circuit voltage) for the sub-cells of tandem organic solar cells (OSCs) to improve photovoltaic performance. We select PTB7-Th:IEICO-4F with a band gap of 1.24 eV as the rear cell and J52-2F:IT-M with a band gap of 1.59 eV as the front cell to fabricate the tandem OSCs. The absorption spectra of PTB7-Th:IEICO-4F is mainly located in the region of 600-950 nm

while that of J52-2F:IT-M is mainly located in the region of 450-750 nm. Their response spectra are very complementary

and both of the sub-cells show high external quantum efficiency

prompting the tandem OSCs to realize high-efficiency utilization of solar spectrum in the range of 300-1000 nm. In this tandem OSC

the

loss

in both front and rear cells are also effectively controlled to be 0.64 and 0.53 eV

respectively. In addition

an efficient interconnection layer (ICL) of ZnO/PCP-Na is used to connect the front and the rear sub-cells

which shows outstanding diode characteristics and high light transmittance in the long wavelength direction. In view of these excellent properties

the tandem solar cells manufactured in this work possess the advantages of high short-circuit current density (

) and

reaching 13.3 mA/cm

and 1.65 V

respectively. The highest power conversion efficiency (PCE) of the tandem OSC reaches 14.9%. The device parameters decrease slightly after encapsulation due to the intense ultraviolet irradiation

and a certified PCE of 14.0%

with a

of 1.64 V

of 12.9 mA/cm

and a fill factor (FF) of 0.664

recorded by National Institute of Metrology (NIM)

China. This result is the best obtained in the organic photovoltaic field.

关键词

有机太阳能电池聚合物太阳能电池非富勒烯叠层器件能量转换效率

Keywords

Organic solar cellsPolymer solar cellsNon-fullerene acceptorTandem solar cellHigh performance

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