Figure 3From: Optimization of the dye-sensitized solar cell performance by mechanical compressionFE-SEM micrographs for TiO 2 nanoparticles film on FTO glass fabricated by doctor blading method with/without compression treatment. (a) As-deposited film and (b- f) after mechanical compression at various pressures, 61, 131, 279, 558, and 858 kg/cm2, respectively. The panels (a’-f’) show the high magnification images.Back to article page