Scientific Reports (Aug 2017)

Spray-cast multilayer perovskite solar cells with an active-area of 1.5 cm2

  • James E. Bishop,
  • David K. Mohamad,
  • Michael Wong-Stringer,
  • Alex Smith,
  • David G. Lidzey

DOI
https://doi.org/10.1038/s41598-017-08642-2
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 11

Abstract

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Abstract We utilise spray-coating under ambient conditions to sequentially deposit compact-TiO2, mesoporous-TiO2, CH3NH3PbI(3−x)Clx perovskite and doped spiro-OMeTAD layers, creating a mesoporous standard architecture perovskite solar cell (PSC). The devices created had an average power conversion efficiency (PCE) of 9.2% and a peak PCE of 10.2%; values that compare favourably with control-devices fabricated by spin-casting that had an average efficiency of 11.4%. We show that our process can be used to create devices having an active-area of 1.5 cm2 having an independently verified efficiency of 6.6%. This work demonstrates the versatility of spray-coating as well as its potential as a method of manufacturing low-cost, large-area, efficient perovskite devices.