Degradation analysis in mixed (MAPbI3 and MAPbBr3) perovskite solar cells under thermal stress

  • Zubair AhmadEmail author
  • Ali Sehpar Shikoh
  • Sanghyun Paek
  • M. K. Nazeeruddin
  • Shaheen A. Al-Muhtaseb
  • Farid Touati
  • J. Bhadra
  • Noora J. Al-Thani


The current study provides an insight into the thermal stability of perovskite solar cells (PSCs) and the factors causing their degradation. To this end, a systematic stability study was carried out on n-i-p type perovskite solar cells involving mesoporous TiO2 layer. The samples were subjected to varying moisture and thermal conditions under light soaking while being exposed to long-term indoor (5000 h) and outdoor (75 h) harsh environmental conditions (i.e. 30%–80% RH and 40 °C–70 °C). To identify performance and morphological changes of PSCs after exposure to thermal stress, advanced characterization techniques including impedance spectroscopy, scanning electron microscopy and glow discharge optical emission spectrometry along with I–V characteristics were used. The un-encapsulated samples exposed to high thermal stress (40–70 °C) show degradation in their efficiency more than 40% within the 75 h of thermal stress. In contrast, the samples that were kept at room temperature were found to be very stable over 5000 h.



This work was supported by Qatar University Internal Grant No. QUCG-CAM-2018/19-1 and NPRP Grant # 6-175-2-070 from Qatar National Research Fund (a member of Qatar Foundation). The findings achieved herein are solely the responsibility of the authors. The authors are thankful to the Center for Advanced Materials (CAM), Qatar University for providing the laboratory support to conduct this work. Thanks to HORIBA Scientific—Jocelyne Marciano, Sofia Gaiaschi and Patrick Chapon for the GD measurements and interpretation.

Author contributions

ZA and MKN planned the experiment for degradation analysis. SP prepare the samples. ZA and ASS performed experiment. ZA and ASS analyzed the data and wrote the manuscript, SAA-M, FT, JB, NJA-T and MKN took part actively the discussion during the preparation and reviewing of the manuscript. MKN and SP validate the results.

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interest.


  1. 1.
    A. Kojima, K. Teshima, Y. Shirai, T. Miyasaka, Organometal halide perovskites as visible-light sensitizers for photovoltaic cells. J. Am. Chem. Soc. 131, 6050–6051 (2009)CrossRefGoogle Scholar
  2. 2.
  3. 3.
    D. Li, M. Wang, Stability issues of inorganic/organic hybrid lead perovskite solar cells, in Perovskite Solar Cells: Principle, Materials and Devices, ed. by E.W-G. Diau, P.C.-Y. Chen (World Scientific, 2017), pp. 147–178Google Scholar
  4. 4.
    F. Bella et al., Improving efficiency and stability of perovskite solar cells with photocurable fluoropolymers. Science (2016). Google Scholar
  5. 5.
    J. You et al., Improved air stability of perovskite solar cells via solution-processed metal oxide transport layers. Nat. Nanotechnol. 11(1), 75–81 (2016)CrossRefGoogle Scholar
  6. 6.
    H.C. Weerasinghe et al., Encapsulation for improving the lifetime of flexible perovskite solar cells. Nano Energy 18, 118–125 (2015)CrossRefGoogle Scholar
  7. 7.
    I. Hwang et al., Enhancing stability of perovskite solar cells to moisture by the facile hydrophobic passivation. ACS Appl. Mater. Interfaces 7(31), 17330–17336 (2015)CrossRefGoogle Scholar
  8. 8.
    M. Kaltenbrunner et al., Flexible high power-per-weight perovskite solar cells with chromium oxide–metal contacts for improved stability in air. Nat. Mater. 14(10), 1032 (2015)CrossRefGoogle Scholar
  9. 9.
    K. Domanski et al., Not all that glitters is gold: metal-migration-induced degradation in perovskite solar cells. ACS Nano 10(6), 6306–6314 (2016)CrossRefGoogle Scholar
  10. 10.
    G. Niu et al., Enhancement of thermal stability for perovskite solar cells through cesium doping. RSC Adv. 7(28), 17473–17479 (2017)CrossRefGoogle Scholar
  11. 11.
    X. Li et al., Outdoor performance and stability under elevated temperatures and long-term light soaking of triple-layer mesoporous perovskite photovoltaics. Energy Technol. 3(6), 551–555 (2015)CrossRefGoogle Scholar
  12. 12.
    X. Zhao et al., Effect of selective contacts on the thermal stability of perovskite solar cells. ACS Appl. Mater. Interfaces 9(8), 7148–7153 (2017)CrossRefGoogle Scholar
  13. 13.
    S. Paek et al., Dopant-free hole-transporting materials for stable and efficient perovskite solar cells. Adv. Mater. (2017). Google Scholar
  14. 14.
    J. Xiong et al., Interface degradation of perovskite solar cells and its modification using an annealing-free TiO2 NPs layer. Org. Electron. 30, 30–35 (2016)CrossRefGoogle Scholar
  15. 15.
    H.-W. Chen et al., Efficiency enhancement of hybrid perovskite solar cells with MEH-PPV hole-transporting layers. Sci. Rep. 6, 34319 (2016)CrossRefGoogle Scholar
  16. 16.
    H. Lee et al., Direct experimental evidence of halide ionic migration under bias in CH3NH3PbI3–xClx-based perovskite solar cells using GD-OES analysis. ACS Energy Lett. 2(4), 943–949 (2017)CrossRefGoogle Scholar

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Center for Advanced Materials (CAM)Qatar UniversityDohaQatar
  2. 2.Department of Electrical Engineering, College of EngineeringQatar UniversityDohaQatar
  3. 3.Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and EngineeringÉcole Polytechnique Fédérale de LausanneLausanneSwitzerland
  4. 4.Department of Chemical Engineering, College of EngineeringQatar UniversityDohaQatar

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