A novel ball milling technique for room temperature processing of TiO 2 nanoparticles employed as the electron transport layer in perovskite solar cells and modules M. Singh C. Chiang K. M. Boopathi C. Hanmandlu G. Li C. Wu H. Lin and C. Chu J. Mater.
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in a planetary ball mill 10 . Figure 1. Planetary ball mill 12 B. SPEX Shaker mills These mills can mill about 10-20g of material at a time and are commonly used in laboratory investigation 11 .The commonly used version has a via which contain the material to be grounded and the grinding balls secured in a clamp and
For the other two conditions 1 g of LaNiO 3 powders was ball milled by a wet process with either 20 mL ethyl alcohol or 20 mL DI water under the same ball milling conditions as LNO BM Dry. They were referred to as LNO BM Ethyl and LNO BM DI for ball milling with ethyl alcohol and DI water respectively. 2.2. Preparation of electrodes
Ba0.5La0.5Co0.5Fe0.5O3−δ was synthesized in the solid-state reaction route. The influence of ball milling parameters such as milling media size angular velocity and time pelletizing pressure and annealing parameters on the microstructure was studied. The grain size distribution and density or specific surface area changes were investigated in each approach while the individual ...
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homogeneous distribution size and dispersed in isopropanol by ball milling without addition of any surfactants. Stable dispersions were deposited on a mesoscopic perovskite solar cell as the hole transport medium as a replacement of polymeric hole conductors and 10.89% efficiency was obtained for the optimized structure.
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