Review of flexible and transparent thin-film transistors based on zinc oxide and related materials

Zhang Yong-Hui¹, Mei Zeng-Xia^{1, †}, Liang Hui-Li¹, Du Xiao-Long^{1, 2, ‡}

(color online) Optical transmittance spectra of four commonly used flexible transparent substrates (PI, PET, PEN & PDMS) in comparison with rigid quartz. Insets shows the actual photographs of the substrates