SCI Engineered Materials Inc., a supplier and manufacturer of advanced materials for physical vapor deposition thin-film applications, has reported a decrease in total revenue for fiscal 2015. Revenue dropped by 13 percent to $8 million from $9.2 million in fiscal 2014. The company said sales of photonics products were negatively affected by reduced price and volume of a low-commodity material. Revenue from thin film solar products increased about $1 million. SCI manufactures sputtering targets for growth markets in the physical vapor deposition industry.