Er3+-doped　Ba0.85Ca0.15Ti0.9Zr0.1O3　(xEr-BCTZ,　x　=　0,　0.005,　0.01,　0.015)　multifunctional　thick　films　were　prepared　by　the　tape-casting　method,　using　sol-gel-derived　nano-sized　powders　as　the　matrix　material.　The　surface　morphologies,　photoluminescence,　and　electrical　properties　were　investigated.　Dense　microstructures　with　pure　perovskite　structure　were　obtained　in　the　thick　films.　By　doping　an　appropriate　amount　of　Er3−,　the　samples　exhibit　superior　up-conversion　photoluminescence　performance　and　simultaneously　enhanced　electrical　performances.　In　addition,　relatively　higher　texture　fractions　(with　the　largest　value　of　83.5%)　were　realized　through　introducing　plate-like　BaTiO3　templates　to　make　the　thick　film　grow　by　the　[001]c　orientation.　And　the　ferro-/piezoelectric　properties　of　the　thick　films　were　further　improved,　showing　potential　in　the　applications　of　micro-optoelectronic　devices.　©　2020,　The　Author(s).