A Two-Step, All Solution Process for Conversion of Lead Sulfide to Methylammonium Lead Iodide Perovskite Thin Films

Maayan Perez, Sa'ar Shor Peled, Tzvi Templeman, Anna Osherov, Vladimir Bulovic, Eugene A. Katz, Yuval Golan

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

We present an all solution, two-step method for the production of methylammonium lead iondide (MAPbI3) perovskite thin films. Initially, PbS thin films were deposited on GaAs substrates. Subsequently, PbS films were transformed into PbI2 following treatment with polyiodide solutions. In a second conversion step, MAPbI3 films were obtained by reacting the films with methylammonium iodide solutions. The effect of the solvent on lead iodide morphology and consequently on MAPbI3 morphology was demonstrated. Conversion rate was slower with increasing solvent polarity. Optimization of conversion parameters is crucial for reproducibly obtaining continuous and adhesive perovskite films. Photoluminescence measurements showed that chemical treatments can substantially enhance light emission from the films. This route for all-solution-processed perovskites enables control over film morphology while maintaining a simple and low-cost process.

اللغة الأصليةإنجليزيّة أمريكيّة
رقم المقال138367
دوريةThin Solid Films
مستوى الصوت714
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 30 نوفمبر 2020

All Science Journal Classification (ASJC) codes

  • !!Electronic, Optical and Magnetic Materials
  • !!Surfaces and Interfaces
  • !!Surfaces, Coatings and Films
  • !!Metals and Alloys
  • !!Materials Chemistry

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