“…Additional processes are also critical to avoid exposing the ZnO to humidity as is it moisture-sensitive, and this includes the deposition of a barrier layer between the ZnO and the polymer, 22 or to treat the ZnO with hydrogen or argon. 25,26 Thin glass substrate. An ultra-thin layer of glass exhibits flexural rigidity, in addition to a unique encapsulation characteristic, low water vapor transmission rate, high temperature resistance, high transparency, and light weight that makes it advantageous over metal foils and plastic-based substrates.…”