On December 13th Marisé Garcia Batllé defended her PhD Thesis “High Quality Perovskite Materials for X-Ray Detection: Effect of Mobile Ions on Dark Current Stability”. The work was supervised by Prof. Germà Garcia Belmonte and Dr. Antonio Guerrero, and got the qualification of Excellent Cum laude. The evaluation committee was formed by Prof. Bruno Ehrler (AMOLF) Amsterdam, Prof. Beatriz Romero (Universidad Rey Juan Carlos) Madrid and Prof. Francisco Fabregat Santiago UJI (INAM) , Castelló.