Inverted organic solar cells with solvothermal synthesized vanadium-doped TiO
2
thin films as efficient electron transport layer
Ahmadi Mehdi
†
, Dafeh Sajjad Rashidi
, Ghazanfarpour Samaneh
, Khanzadeh Mohammad
(color online) Optical band gap of (a) pure and (b) vanadium-doped TiO
2
thin film NPs.