Scholarlink

<p>Materials science plays a vital role in revolutionizing energy conversion systems with the manipulation of materials at atomic and molecular scales. The precision-engineered nanomaterials improve longevity, efficiency, and sustainability while mitigating the environmental footprints. Perovskite solar cells (PSCs) have thrived as a promising alternative to commercial solar cells, with the advantage of being economical and having easy processing techniques. We herein report the synthesis and characterization of titania nanocones with high transparency upon doping aluminum (2 wt%, 3 wt%, and 4 wt%) which acts as electron transport material in PSC. Nanocones act as photoactive material, as they interact with sunlight to transport electrons to the respective electrode. The examination of phase, crystallinity, morphology, opto-electronic properties, photovoltaic parameters, and the cell’s efficiency were characterized by XRD, SEM, EDX, UV-DRS, BET analysis, field-dependent dark and photoconductivity analysis, and J-V analysis. In comparison with pure titania nanocones, Al-doped nanocones had increased length of nanocones reaching up to ~ 676&#xa0;nm and exhibited a significant increase in conduction and collection of charges. The specific surface area increased up to 3 wt% of the dopant concentration (TA3) around 85.162 m<sup>2</sup>/g and dropped down further to 78.310 m<sup>2</sup>/g. The photoconductivity measurements showed that the doped sample with 3 wt% of aluminum (TA3) had a two-fold increase in photocurrent and the absorption edges had a shift towards the shorter wavelength from 316 to 300&#xa0;nm in the ultraviolet spectrum, with narrowing of the bandgap. Thus, the doped sample with 3 wt% of aluminum with short-circuit current density (J<sub>SC</sub>) ~ 34&#xa0;mA/cm<sup>2</sup>, open-circuit voltage (V<sub>OC</sub>) ~ 950&#xa0;mV, fill-factor (FF) ~ 0.856, and efficiency around 2.6% was ascertained to be a remarkable electron transport material (ETM) in this perovskite module.</p> Graphical Abstract <p>Graphical abstract of observed results of Al-doped TiO<sub>2</sub> nanocones in methyl ammonium lead bromide-based perovskite solar cell.</p> <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Al-doped TiO2 nanocones as high-performance ETLs for eco-sustainable perovskite solar cells

  • 期刊论文

  • 发表日期：

    2025年9月1日

查看全文
  • Arokiaraj Shiny Jerushah,
  • Joseph Akshara Sherline,
  • Chelliah Johxy,
  • Charly Vinodha,
  • Gnanapragasam Dorry Breeze,
  • Joseph Merline Shyla

摘要

Materials science plays a vital role in revolutionizing energy conversion systems with the manipulation of materials at atomic and molecular scales. The precision-engineered nanomaterials improve longevity, efficiency, and sustainability while mitigating the environmental footprints. Perovskite solar cells (PSCs) have thrived as a promising alternative to commercial solar cells, with the advantage of being economical and having easy processing techniques. We herein report the synthesis and characterization of titania nanocones with high transparency upon doping aluminum (2 wt%, 3 wt%, and 4 wt%) which acts as electron transport material in PSC. Nanocones act as photoactive material, as they interact with sunlight to transport electrons to the respective electrode. The examination of phase, crystallinity, morphology, opto-electronic properties, photovoltaic parameters, and the cell’s efficiency were characterized by XRD, SEM, EDX, UV-DRS, BET analysis, field-dependent dark and photoconductivity analysis, and J-V analysis. In comparison with pure titania nanocones, Al-doped nanocones had increased length of nanocones reaching up to ~ 676 nm and exhibited a significant increase in conduction and collection of charges. The specific surface area increased up to 3 wt% of the dopant concentration (TA3) around 85.162 m2/g and dropped down further to 78.310 m2/g. The photoconductivity measurements showed that the doped sample with 3 wt% of aluminum (TA3) had a two-fold increase in photocurrent and the absorption edges had a shift towards the shorter wavelength from 316 to 300 nm in the ultraviolet spectrum, with narrowing of the bandgap. Thus, the doped sample with 3 wt% of aluminum with short-circuit current density (JSC) ~ 34 mA/cm2, open-circuit voltage (VOC) ~ 950 mV, fill-factor (FF) ~ 0.856, and efficiency around 2.6% was ascertained to be a remarkable electron transport material (ETM) in this perovskite module.

Graphical Abstract

Graphical abstract of observed results of Al-doped TiO2 nanocones in methyl ammonium lead bromide-based perovskite solar cell.