Tailoring Photovoltage Response at SrRuO₃/SrTiO₃ Heterostructures

The photovoltage and lifetime of the photo-excited carriers at the SrTiO3 surface drastically change with the SrRuO3 overlayers, as element specifically tracked by time-resolved core-level photoemission spectroscopy. The results show that the optical responses of oxide semiconductor heterostructures are designed by the band alignment scheme and they are tailored by the film growth. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.