Exploring the Use of Methylammonium Iodide to Improve the Uniformity of the MAPbI3 Layer in HTM-Free Perovskite Solar Cells Equipped with Back Contacts based on Pastes of Graphite and Black Carbon in a Polyvinylidene Fluoride in Toluene Solution

  1. Llarena, E.
  2. González-Diaz, B. 1
  3. González-Pérez, S.
  4. Ocaña, L.
  5. Montes, C.
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

Actas:
38th European Photovoltaic Solar Energy Conference and Exhibition

Editorial: WIP

ISBN: 3-936338-78-7

Año de publicación: 2021

Páginas: 398-402

Tipo: Aportación congreso

DOI: 10.4229/EUPVSEC20212021-3BV.1.2 GOOGLE SCHOLAR lock_openAcceso abierto editor

Resumen

A new iteration of a perovskite solar cell has been developed that evolves from architectures previously studied by our group, this time exploring the introduction of a graphite and black carbon with methylammonium iodide (MAI) in polyvinylidene fluoride layer, which is placed over the methylammonium lead triiodide (MAPbI3) one, in order to reduce the heat-induced perovskite decomposition that results from the thermal processes in ambient conditions that are required to deposit the back electrode, which also acts in the cell as hole transport material and encapsulate. A batch of devices has been produced and characterized, obtaining power conversion efficiencies (PCE) up to 1.32%.