Performance improvement of dye-sensitized solar cell by introducing Sm3+/Y3+ co-doped TiO2 film as an efficient blocking layer

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卷:631

Article

Qin, Yiying^1,4  Hu, Zhiqiang¹  Lim, Boon Han^1,2  Yang, Bin¹  Chong, Kok-Keong²  Chang, Wei Sea³  Zhang, Putao¹  Zhang, Haitao¹ 

[1] Dalian Polytech Univ, Inst New Energy Mat, Dalian 116034, Peoples R China

[2] Univ Tunku Abdul Rahman, Lee Kong Chian Fac Engn & Sci, Kajang 43000, Selangor, Malaysia

[3] Monash Univ Malaysia, Sch Engn, Bandar Sunway 47500, Selangor, Malaysia

[4] Nanjing Univ, Kunshan Innovat Inst, Kun Shan, Peoples R China

关键词: Dye-sensitized solar cell;    Down-conversion;    Sm3+/Y3+: TiO2;    Blocking layer;    Recombination rate;    Co-doped TiO2;    Samarium;    Yttrium;   

DOI  :  10.1016/j.tsf.2017.03.042

来源: Elsevier

【 摘 要 】

Luminescence mediums: samarium ion and yttrium ion, were introduced to expand the photo-response region of TiO2 by means of the down-conversion effect to convert ultraviolet light into visible light, offering a unique method to enhance the photovoltaic performance of dye-sensitized solar cells (DSSCs). Their crystal structures, optical properties as well as photovoltaic performance were investigated systematically. The result indicates that the DSSCs doped with a total molar ratio of 4 mol% of Sm3+ and Y3+ show an overall power conversion efficiency of 4.09%, which is equivalent to improvements of 17.52% and 16.2% as compared to the no blocking layer DSSCs and pure TiO2 blocking layer DSSCs respectively. The improvement in conversion efficiency is attributed to the dual effects including down-conversion of ultraviolet light and reduction of electron-hole recombination rate. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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