Application research of CdS: Eu³⁺ quantum dots-sensitized TiO₂ nanotube solar cells

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• 作者：Qian Chen ; Jiahui Song ; Chunyan Zhou ; Qi Pang ; Liya Zhou ; ^{zhouliyatf@163.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Quantum dots ; Nanotubes ; Solar cells
• 刊名：Materials Science in Semiconductor Processing
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：46
• 期：Complete
• 页码：53-58
• 全文大小：1249 K

文摘

Trivalent Eu³⁺-doped CdS quantum dot (CdS: Eu³⁺ QD)-sensitized TiO₂ nanotube arrays (TNTAs) solar cells are prepared by using the direct adsorption method. The influences of sensitization time, sensitization temperature, and Eu³⁺ ion concentrations are investigated systematically. The photo-current of the CdS: Eu³⁺ QDs/TiO₂ nanotubes appear at the main absorption region of 320–480 nm, and the maximum incident photon to the current conversion efficiency (IPCE) value is 21% at 430 nm when the sensitization condition is 4% doping Eu³⁺ concentration, 60 °C sensitization temperature, 8 h sensitization time. Compared with the un-doped CdS QD-sensitized TNTAs, the conversion efficiency and IPCE of CdS: Eu³⁺ QDs/TNTAs are two times and three times than that of un-doped CdS QDs sensitized TNTAs. This scenario exhibits the potential applications of rare earth elements in QD-sensitized solar cells.