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Dye Enhanced Quantum Dot Sensitized Solar Cell

    Shawqi Al Dallal Khalil Ebrahim Jasim

Advanced Materials Letters, 2022, Volume 13, Issue Issue 2, Pages 2202-1691
10.5185/amlett.2022.021691

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Abstract

Third generation solar cells, such as dye and quantum dot sensitized solar cells are attracting attention of many research groups. In this investigation we explore the role of dye extract on the enhancement of the photovoltaic properties of quantum dot sensitized solar cells (QDSSCs). Lead sulfide quantum dots of different sizes have been used to sensitize a nanostructured titanium oxide electrode. We compare the open circuit voltage, the short circuit current, and power conversion efficiency of QDSSCs with the same quantities as obtained for dye-enhanced system using pomegranate dye extract. An open circuit voltage of 166 mV, a short circuit current of 0.1 mA, and an efficiency of 0.32% were obtained for 2.4 nm radius lead sulfide quantum dot sensitized solar cells. Using pomegranate dye extract reveals a considerable enhancement of the above characteristics. The combined dye-quantum dot system produces an open circuit voltage of 300 mV, a short circuit current of 0.55 mA, and an efficiency of 3.4%. For 3.2 nm radius QDs, the efficiency is substantially higher, reaching about 7%. A model describing the structure and processes leading to the above enhancement of the assembled solar cell characteristics is presented. In this model we explain the interplay between the transfer of electrons between the dye, quantum dots, and subsequent injection in the wide band gap titanium dioxide semiconductor. 
Keywords:
    Dye sensitized solar cell quantum dots titanium oxide nanoparticles
Main Subjects:
  • Energy Materials & Technology
  • Solar Energy Materials
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(2022). Dye Enhanced Quantum Dot Sensitized Solar Cell. Advanced Materials Letters, 13(Issue 2), 2202-1691. doi: 10.5185/amlett.2022.021691
Shawqi Al Dallal; Khalil Ebrahim Jasim. "Dye Enhanced Quantum Dot Sensitized Solar Cell". Advanced Materials Letters, 13, Issue 2, 2022, 2202-1691. doi: 10.5185/amlett.2022.021691
(2022). 'Dye Enhanced Quantum Dot Sensitized Solar Cell', Advanced Materials Letters, 13(Issue 2), pp. 2202-1691. doi: 10.5185/amlett.2022.021691
Dye Enhanced Quantum Dot Sensitized Solar Cell. Advanced Materials Letters, 2022; 13(Issue 2): 2202-1691. doi: 10.5185/amlett.2022.021691
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