tantalum pentaethoxide
... that tantalum pentaethoxide is used in the production of optical, electrochromic, and semiconductor devices?
... that <b id="mwCXE"><a href="./Tantalum(V)_ethoxide" id="mwCXI" rel="mw:WikiLink" title="Tantalum(V) ethoxide">tantalum pentaethoxide</a></b> is used in the production of <a href="./Optical_coating" id="mwCXM" rel="mw:WikiLink" title="Optical coating">optical</a>, <a href="./Electrochromism" id="mwCXQ" rel="mw:WikiLink" title="Electrochromism">electrochromic</a>, and <a href="./Semiconductor" id="mwCXU" rel="mw:WikiLink" title="Semiconductor">semiconductor</a> devices?