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<p>This study investigates the effect of mesoporous TiO<sub>2</sub> electron transport layer on the electrical performance of CsPbBr<sub>3</sub>-based perovskite solar cells. The mesoporous TiO<sub>2</sub> layer was prepared using two types of paste, i.e., active opaque (AO) and transparent (T), each made with various concentrations. Morphological characterizations using scanning electron microscopy showed that the transparent TiO<sub>2</sub> film prepared with 1:15 weight ratio to ethanol produced a smooth and homogenous CsPbBr<sub>3</sub> film with no distinct agglomerations. The same sample also achieved the highest power conversion efficiency of 4.5%, with an open-circuit voltage of 1.275&#xa0;V, a short-circuit current density of 6.6&#xa0;mA/cm<sup>2</sup>, and a fill factor of 0.54. This work demonstrates that the performance of all-inorganic solar cells prepared under ambient conditions with relative humidity of 55–65% could be finely tuned via morphological modifications at the electron transport layer.</p>

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Analyzing the effect of mesoporous TiO2 electron transport layer in CsPbBr3 perovskite solar cells fabricated under humid environment

  • 期刊论文

  • 发表日期：

    2025年3月18日

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  • Prima Fitri Rusliani,
  • Wilman Septina,
  • Widhya Budiawan,
  • Shobih,
  • Rimbi Rodiyana Sova,
  • Xorell Ivanov Monov,
  • Lia Yuliantini,
  • Ahmad Ibrahim,
  • Eka Cahya Prima,
  • Brian Yuliarto,
  • Natalita Maulani Nursam

摘要

This study investigates the effect of mesoporous TiO2 electron transport layer on the electrical performance of CsPbBr3-based perovskite solar cells. The mesoporous TiO2 layer was prepared using two types of paste, i.e., active opaque (AO) and transparent (T), each made with various concentrations. Morphological characterizations using scanning electron microscopy showed that the transparent TiO2 film prepared with 1:15 weight ratio to ethanol produced a smooth and homogenous CsPbBr3 film with no distinct agglomerations. The same sample also achieved the highest power conversion efficiency of 4.5%, with an open-circuit voltage of 1.275 V, a short-circuit current density of 6.6 mA/cm2, and a fill factor of 0.54. This work demonstrates that the performance of all-inorganic solar cells prepared under ambient conditions with relative humidity of 55–65% could be finely tuned via morphological modifications at the electron transport layer.