Optimization of Interface Layers in Small Molecule Organic Tandem Solar Cells

被引：0
|
作者：
Luo X. [1 ]
Jin Y. [1 ]
Li Z.-X. [1 ]
Liu Y.-W. [1 ]
Zhang Y. [1 ]
Lin Z.-J. [1 ]
Wu Z.-J. [1 ]
机构：
[1] Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen
来源：
Jin, Yu (jinyu1001@hqu.edu.cn) | 1600年 / Editorial Office of Chinese Optics卷 / 41期
基金：
中国国家自然科学基金;
关键词：
Bulk heterojunction; Cathode interface layer; Intermediate layer; Tandem organic solar cell;
D O I：
10.3788/fgxb20204102.0175
中图分类号：
学科分类号：
摘要：
The performance of double-junction tandem organic solar cells (OSCs) was improved by optimizing interlayer (IL), cathode interface layer (CL) and active layer. Firstly, by employing low work function metal nanoparticles (Mg, Ag, Al and Ca) as IL, the optimal performance was obtained in OSC with IL of 0.1 nm Al. Comparing to tandem OSCs without IL, the power conversion efficiency (PCE) of OSCs with Al IL was increased by 50.9%. Secondly, by employing different low work function metals (Mg, Al and Ca) as CL in tandem OSCs, the optimal performance was obtained in OSC with Mg CL. Compared with tandem OSCs with Al CL, PCE of OSCs with Mg CL was increased by 20.7%. Finally, narrow bandgap material DTDCTB was adopted to replace medium bandgap material boron subphthalocyanine chloride (SubPc) as active layer of the back sub-cell. Compared with tandem OSCs using only SubPc donor material, the PCE was increased by 30.2%. By using bulk heterojunctionstructure in both front and back sub-cells, PCE of tandem OSCs reached 4.04%. Compared with PCE (2.1%) of original non-optimized OSCs, the PCE of optimal OSCs was increased by 92.4%. © 2020, Science Press. All right reserved.
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页码：175 / 180
页数：5
相关论文
共 21 条
  • [1] Huo L.J., Liu T., Sun X.B., Et al., Single-junction organic solar cells based on a novel wide-band gap polymer with efficiency of 9.7%, Adv. Mater., 27, 18, pp. 2938-2944, (2015)
  • [2] Wang Y.M., Wei W., Liu X., Et al., Research progress on polymer heterojunction solar cells, Sol. Energy Mater. Sol. Cells, 98, pp. 129-145, (2012)
  • [3] Zhang F.J., Xu X.W., Tang W.H., Et al., Recent development of the inverted configuration organic solar cells, Sol. Energy Mater. Sol. Cells, 95, 7, pp. 1785-1799, (2011)
  • [4] Dou L.T., You J.B., Yang J., Et al., Tandem polymer solar cellsfeaturing a spectrally matched low-bandgap polymer, Nat. Photon., 6, 3, pp. 180-185, (2012)
  • [5] Zhang L.Z., Wu M.X., Tian J.P., Et al., Improvement of TiO<sub>2</sub> cathode buffer layer to the performance of rubrene/C<sub>70</sub> organic solar cells, Chin. J. Lumin., 38, 3, pp. 359-364, (2017)
  • [6] Sun Y.M., Welch G.C., Leong W.L., Et al., Solution-processed small-molecule solar cells with 6.7% efficiency, Nat. Mater., 11, 1, pp. 44-48, (2012)
  • [7] You J.B., Dou L.T., Yoshimura K., Et al., A polymer tandem solar cell with 10.6% power conversion efficiency, Nat. Commun., 4, pp. 1446-1-1446-10, (2013)
  • [8] Qin Y.P., Chen Y., Cui Y., Et al., Achieving 12.8% efficiency by simultaneously improving open-circuit voltage and short-circuit current density in tandem organic solar cells, Adv. Mater., 29, 24, (2017)
  • [9] He Z.C., Zhong C.M., Su S.J., Et al., Enhanced power-conversion efficiency in polymer solar cells using an inverted device structure, Nat. Photon., 6, 9, pp. 591-595, (2012)
  • [10] Jin Y., Wang K., Zou D.H., Et al., Plasmon-cavity polaritons enhance the absorption efficiency of top-incident organic thin-film solar cells, Chin. J. Lumin., 38, 11, pp. 1532-1538, (2017)
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