Journal Pre-proof Enhanced photovoltaic performance of Y 2 O 3 :Ho 3+ /Yb 3+ upconversion nanophosphor based DSSC and investigation of color tunability in Ho 3+ /Tm 3+ /Yb 3+ tridoped Y 2 O 3 Prachi Tadge, Ram Sagar Yadav, Pradeep Vishwakarma, S.B. Rai, Teng Ming Chen, Sameer Sapra, Sudeshna Ray PII: S0925-8388(19)34476-7 DOI: https://doi.org/10.1016/j.jallcom.2019.153230 Reference: JALCOM 153230 To appear in: Journal of Alloys and Compounds Received Date: 12 July 2019 Revised Date: 29 November 2019 Accepted Date: 30 November 2019 Please cite this article as: P. Tadge, R.S. Yadav, P. Vishwakarma, S.B. Rai, T.M. Chen, S. Sapra, S. Ray, Enhanced photovoltaic performance of Y 2 O 3 :Ho 3+ /Yb 3+ upconversion nanophosphor based DSSC and investigation of color tunability in Ho 3+ /Tm 3+ /Yb 3+ tridoped Y 2 O 3 , Journal of Alloys and Compounds (2020), doi: https://doi.org/10.1016/j.jallcom.2019.153230. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier B.V.