Thin solid films of organic conjugated mole-cules are at the center of organic electronics. Low solubility and high sublimation temperature of porphyrin-perylene arrays make it impossible to fabricate uniform solid films with spin-coating and vacuum deposition methodology, though these arrays have important applications in the area of opto-electronics. Here we show that high quality thin films of a porphyrin-perylene array can be prepared by electro-chemical deposition, a facile and widely used film-forming technique. The electrophoretic species are protonated por-phyrin-perylene molecules, which allow us to grow molecular array films on electrodes. By annealing in ammonia atmos-phere or in vacuum at elevated temperature, the protons coordinated with molecular arrays on the deposited films can be eliminated and the porphyrin-perylene arrays recovered to their pristine state. Thin solid films of organic conjugated mole-cules are at the center of organic electronics. Low solubility and high sublimation temperature of porphyrin-perylene arrays make it impossible to fabricate uniform solid films with spin-coating and vacuum deposition methodology, though these arrays have important applications in the area of ​​opto-electronics. Here we show that high quality thin films of a porphyrin-perylene array can be prepared by electro-chemical deposition, a facile and widely used film-forming technique. The electrophoretic species are protonated por-phyrin -perylene molecules, which allow us to grow molecular array films on electrodes. By annealing in ammonia atmos-phere or in vacuum at elevated temperature, the protons coordinated with molecular arrays on the deposited films can be eliminated and the porphyrin-perylene arrays recovered to their pristine state