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A New Up-conversion Material of Ho³⁺-Yb³⁺-Mg²⁺ Tri-doped TiO₂ and Its Applications to Perovskite Solar Cells.

ABSTRACT: A new up-conversion nanomaterial of Ho³⁺-Yb³⁺-Mg²⁺ tri-doped TiO₂ (UC-Mg-TiO₂) was designed and synthesized with a sol-gel method. The UC-Mg-TiO₂ presented enhanced up-conversion fluorescence by an addition of Mg²⁺. The UC-Mg-TiO₂ was utilized to fabricate perovskite solar cells by forming a thin layer on the electron transfer layer. The results display that the power conversion efficiency of the solar cells based on the electron transfer layer with UC-Mg-TiO₂ is improved to 16.3 from 15.2% for those without UC-Mg-TiO₂. It is demonstrated that the synthesized UC-Mg-TiO₂ can convert the near-infrared light to visible light that perovskite film can absorb to improve the power conversion efficiency of the devices.

SUBMITTER: Zhang Z

PROVIDER: S-EPMC6119175 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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A New Up-conversion Material of Ho3+-Yb3+-Mg2+ Tri-doped TiO2 and Its Applications to Perovskite Solar Cells.

Zhang Zhenlong Z Li Danna D Shi Wenjia W Liu Yanyan Y Zhang Yan Y Liu Yuefeng Y Gao Huiping H Mao Yanli Y

Nanoscale research letters 20180831 1

A new up-conversion nanomaterial of Ho3+-Yb3+-Mg2+ tri-doped TiO2 (UC-Mg-TiO2) was designed and synthesized with a sol-gel method. The UC-Mg-TiO2 presented enhanced up-conversion fluorescence by an addition of Mg2+. The UC-Mg-TiO2 was utilized to fabricate perovskite solar cells by forming a thin layer on the electron transfer layer. The results display that the power conversion efficiency of the solar cells ...[more]

PMID: 30171382

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