A dopant-free 2,7-dioctyl[1]benzothieno[3,2-<i>b</i>][1]benzothiophene (C8-BTBT)-based hole transporting layer for highly stable perovskite solar cells with efficiency over 22%
İsmail Cihan Kaya, Resül Özdemir, Hakan Usta, Savaş Sönmezoğlu
Abstract
Herein, we have demonstrated n–i–p PSCs with an efficiency of 22.45% and high thermal stability using dopant-free 2,7-dioctyl[1]benzothieno[3,2- b ][1]benzothiophene (C8-BTBT) as the solution-processed hole transporting layer (HTL).
Topics & Concepts
BenzothiopheneDopantThermal stabilityMaterials scienceLayer (electronics)ChemistryChemical engineeringOptoelectronicsDopingOrganic chemistryNanotechnologyThiopheneEngineeringPerovskite Materials and ApplicationsConducting polymers and applicationsOrganic Electronics and Photovoltaics