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Applied Physics A

, Volume 116, Issue 3, pp 993–999 | Cite as

Highly efficient inverted polymer solar cells using aqueous ammonia processed ZnO as an electron selective layer

  • Xiao-Zhao Zhu
  • Feng-Shuo Zu
  • Mei-Feng Xu
  • Xiao-Bo Shi
  • Zhi-Ming Jin
  • Zhao-Kui WangEmail author
  • Liang-Sheng Liao
Article
  • 367 Downloads

Abstract

The authors demonstrate a simple method to deposit solution-processable ZnO thin film by directly dissolving the ZnO powder into aqueous ammonia. ZnO film casting from its aqueous ammonia solution (a-ZnO) is used successfully as an electron selective layer in poly(3-hexylthiophene) and indene-C60 bisadduct (IC60BA) based heterojunction solar cells with improved power conversion efficiency (PCE) compared with that using conventional solgel based ZnO (c-ZnO). The improved PCE is mainly attributed to an increase of short-circuit current density owing to the better transmittance of a-ZnO than that of c-ZnO in the absorption range of IC60BA, and efficient electron extraction at cathode. In addition, no additional by-products originated from the organic solvents are introduced as like in solgel based ZnO films.

Keywords

Aqueous Ammonia Power Conversion Efficiency Polymer Solar Cell Ultraviolet Photoelectron Spectroscopy Styrene Sulfonic Acid 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We acknowledge financial support from the Natural Science Foundation of China (Nos. 21161160446, 61036009, 61177016, and 61307036), the National High-Tech Research Development Program (No. 2011AA03A110), the Natural Science Foundation of Jiangsu Province (No. BK2010003) and the Key University Science Research Project of Jiangsu Province (12KJB510028). This is also a project supported by Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and by the Fund for Excellent Creative Research Teams of Jiangsu Higher Education Institutions.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Xiao-Zhao Zhu
    • 1
  • Feng-Shuo Zu
    • 1
  • Mei-Feng Xu
    • 1
  • Xiao-Bo Shi
    • 1
  • Zhi-Ming Jin
    • 1
  • Zhao-Kui Wang
    • 1
    Email author
  • Liang-Sheng Liao
    • 1
  1. 1.Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesCollaborative Innovation Center of Suzhou Nano Science and Technology, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow UniversitySuzhouChina

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