Reduced ultraviolet light induced degradation and enhanced light harvesting using YVO4:Eu3+ down-shifting nano-phosphor layer in organometal halide perovskite solar cells

Nikhil Chander; A. F. Khan; P. S. Chandrasekhar; Eshwar Thouti; Sanjay Kumar Swami; Viresh Dutta; Vamsi K. Komarala

doi:10.1063/1.4891181

Reduced ultraviolet light induced degradation and enhanced light harvesting using YVO₄:Eu³⁺ down-shifting nano-phosphor layer in organometal halide perovskite solar cells

Nikhil Chander, A. F. Khan, P. S. Chandrasekhar, Eshwar Thouti, Sanjay Kumar Swami, Viresh Dutta, Vamsi K. Komarala

Research output: Contribution to journal › Article › peer-review

163 Scopus citations

Abstract

We report a simple method to mitigate ultra-violet (UV) degradation in TiO₂ based perovskite solar cells (PSC) using a transparent luminescent down-shifting (DS) YVO₄:Eu³⁺ nano-phosphor layer. The PSC coated with DS phosphor showed an improvement in stability under prolonged illumination retaining more than 50% of its initial efficiency, whereas PSC without the phosphor layer degraded to ∼35% of its initial value. The phosphor layer also provided ∼8.5% enhancement in photocurrent due to DS of incident UV photons into additional red photons. YVO₄:Eu³⁺ layer thus served a bi-functional role in PSC by reducing photo-degradation as well as enhancing energy conversion efficiency.

Original language	English
Article number	033904
Journal	Applied Physics Letters
Volume	105
Issue number	3
DOIs	https://doi.org/10.1063/1.4891181
State	Published - 21 Jul 2014
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1063/1.4891181

Cite this

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title = "Reduced ultraviolet light induced degradation and enhanced light harvesting using YVO4:Eu3+ down-shifting nano-phosphor layer in organometal halide perovskite solar cells",

abstract = "We report a simple method to mitigate ultra-violet (UV) degradation in TiO2 based perovskite solar cells (PSC) using a transparent luminescent down-shifting (DS) YVO4:Eu3+ nano-phosphor layer. The PSC coated with DS phosphor showed an improvement in stability under prolonged illumination retaining more than 50% of its initial efficiency, whereas PSC without the phosphor layer degraded to ∼35% of its initial value. The phosphor layer also provided ∼8.5% enhancement in photocurrent due to DS of incident UV photons into additional red photons. YVO4:Eu3+ layer thus served a bi-functional role in PSC by reducing photo-degradation as well as enhancing energy conversion efficiency.",

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AU - Chander, Nikhil

AU - Khan, A. F.

AU - Chandrasekhar, P. S.

AU - Thouti, Eshwar

AU - Swami, Sanjay Kumar

AU - Dutta, Viresh

AU - Komarala, Vamsi K.

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