Abstract
The intrinsic nature of Cu2O to be p-type makes the n-type Cu2O formation difficult, thereby leading toward the heterojunction solar cells. The interface mismatching between Cu2O and the n-type layer in the cell limits its efficiency. Strontium titanate (SrTiO3) is an n-type semiconductor having minimal band offset with Cu2O and possess superior electric properties. SrTiO3 not only serves as an n-type layer in solar photovoltaic but also can work as a protective layer in Cu2O photoelectrochemical cell. Its conduction band lies in between the conduction band of Cu2O and hydrogen reduction potential. In this work, the synthesis of SrTiO3 via pulsed laser deposition (PLD) is discussed on the thermally oxidized Cu2O sheets. It is observed that Cu2O reduces to Cu in its equilibrium phase field during the deposition of SrTiO3 via PLD.
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Acknowledgements
The author thanks the Centre for Excellence in Nanoelectronics (IIT Bombay), National Centre for Photovoltaic Research and Education (supported by MNRE, India) and IRCC for providing the experimental facilities. KRB acknowledges IRCC IIT Bombay for providing funding through Grant No. 12IRCCSG014.
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Aggarwal, G., Singh, A.K., Maurya, S.K., Balasubramaniam, K.R. (2020). Copper Oxide Phase Change During Pulsed Laser Deposition of SrTiO3. In: Singh, S., Ramadesigan, V. (eds) Advances in Energy Research, Vol. 1. Springer Proceedings in Energy. Springer, Singapore. https://doi.org/10.1007/978-981-15-2666-4_19
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