On the Stability of Planar CH3NH3PbI3 Perovskite Solar Cells Produced in Ambient Conditions by Using Polymer Encapsulates

  1. Cendagorta, M.
  2. Friend, M.
  3. Hernandez-Rodriguez, C.
  4. González-Diaz, B. 1
  5. González-Pérez, S.
  6. Moreno-Ramírez, J.S.
  7. De Sousa-Vieira, L.
  8. Montes, C.
  9. Ocaña, L.
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

Actas:
36th European Photovoltaic Solar Energy Conference and Exhibition

Editorial: WIP

ISBN: 3-936338-60-4

Año de publicación: 2019

Páginas: 721-727

Tipo: Aportación congreso

DOI: 10.4229/EUPVSEC20192019-3BV.2.10 GOOGLE SCHOLAR lock_openAcceso abierto editor

Resumen

Photovoltaic devices based on perovskite structures have achieved a relevant improvement in energy efficiency in recent years. However, until now they are unstable under condition of humidity, temperature and solar radiation. In this work we analyze the main degradation causes on these devices. Later, we have analyzed several milestones achieved by the scientific community in terms of improving the stability against solar radiation and temperature for perovskite layers encapsulated with different polymer encapsulates. Finally, the work carried out by ITER’s Solar Cells Laboratory regarding to the degradation of solar cells based on perovskite absorbers, produced in ambient conditions, by using polymer encapsulates is presented. Thus, in a first stage, perovskite layers, encapsulated in EVA films were subjected to different irradiation and thermal conditions. In order to analyze their degradation, optical ellipsometry and microscopy imaging have been used. The preliminary obtained results have demonstrated that optical ellipsometry can be a useful technique in order to study this kind of degradation phenomena. Also, the direct encapsulation of perovskite layers using sheets of EVA provides a great degree of stability against the exposure to temperature and solar radiation.