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dc.contributor.authorTadge, Prachien_US
dc.contributor.authorYadav, Ram Sagaren_US
dc.contributor.authorVishwakarma, Pradeep Kumaren_US
dc.contributor.authorRai, S. B.en_US
dc.contributor.authorChen, Teng-Mingen_US
dc.contributor.authorSapra, Sameeren_US
dc.contributor.authorRay, Sudeshnaen_US
dc.date.accessioned2020-03-02T03:23:25Z-
dc.date.available2020-03-02T03:23:25Z-
dc.date.issued2020-04-25en_US
dc.identifier.issn0925-8388en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.jallcom.2019.153230en_US
dc.identifier.urihttp://hdl.handle.net/11536/153712-
dc.description.abstractThe present study reports the upconversion (UC) based color tuning in Y2O3:Ho3+/Yb3+, Y2O3:Tm3+/Yb3+ and Y2O3:Tm3+/Ho3+/Yb3+ phosphors synthesized through complex based precursor solution method. The Y2O3:Ho3+/Yb3+ phosphor emits intense green and weak red colors whereas the Y2O3:Tm3+/Yb3+ emits NIR and blue colors on excitation with 976 nm. The impact of the enhancement in the concentration of Yb3+ on the color point of codoped as well as tridoped phosphors has been studied in detail. When Y2O3:Tm3+/Ho3+/Yb3+ phosphor is excited by 976 nm laser, the phosphor emits dominant green color. This is due to energy transfer from Tm3+ to Ho3+ ions. The increase in the concentration of Yb3+ ion leads to a color tunability not only in the co-doped but also in the tridoped phosphors. Furthermore, we have incorporated Y2O3:Ho3+,Yb3+ UC phosphor into TiO2 electrode to form an UC based DSSC for converting near IR (NIR) light into visible where DSSCs typically have high sensitivity. The short-circuit current density (Jsc) as well as the open-circuit voltage (Voc) of the UC-TiO2 based cell was found to be 8.46% and 5.18% higher which in turn, resulted into a 10.33% enhancement in power conversion efficiency as compared to that of bare TiO2 based DSSC. Thus, the UC based Y2O3:Ho3+/Yb3+ may be useful in color tunability and DSSC applications. (C) 2019 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectNanophosphoren_US
dc.subjectCooperative energy transferen_US
dc.subjectY2O3:Ho3+,Yb3+en_US
dc.subjectUpconversionen_US
dc.subjectDSSCen_US
dc.titleEnhanced photovoltaic performance of Y2O3:Ho3+/Yb3+ upconversion nanophosphor based DSSC and investigation of color tunability in Ho3+/Tm3+/Yb3+ tridoped Y2O3en_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.jallcom.2019.153230en_US
dc.identifier.journalJOURNAL OF ALLOYS AND COMPOUNDSen_US
dc.citation.volume821en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000512369200057en_US
dc.citation.woscount0en_US
Appears in Collections:Articles