标题：Enhanced photocathodic behaviors of Pb(Zr0.20Ti0.80)O3 films
on Si substrates for hydrogen production

作者 Xiaorong Cheng, Wen Dong, Fengang Zheng, Liang Fang, and Mingrong Shen

论文摘要：Wide bandgap ferroelectric Pb(Zr0.20Ti0.80)O3films were deposited on indium tin oxide (ITO)
coated Si-pnþsubstrates with an intention to form efficient Si-pnþ/ITO/Pb(Zr,Ti)O3(PZT)
photocathode for hydrogen production. Depolarization electric field generated in PZT film due to
poling can drive the photogenerated electrons from Si-pnþjunction to PZT film, resulting in
enhanced photoelectrochemical activity of the photocathode. Comparing the electrode with asprepared PZT film, the photocurrent increased from 100lA cm2to 1.2 mA cm2at 0Vvs.reversible hydrogen electrode (RHE) and the onset potential from 0.36 V to 0.7 Vvs.RHE under 100
mW cm2illumination, manifesting the great advantage of depolarization electric field in driving
the photogenerated carriers not only in the ferroelectric film but also on the interface of different
semiconductors.

原文链接：http://dx.doi.org/10.1063/1.4922733