In a significant advancement for the construction and renewable energy sectors, a team of researchers led by Md. Nazmul Huda from the Institute of Energy at the University of Dhaka has developed a cost-effective method for fabricating transparent conducting oxide (TCO) films using tin oxide (SnO2). This innovative approach, detailed in their recent publication in ‘Discover Materials’, promises to lower production costs for critical components in technologies such as solar cells and touch-screen devices.
The research highlights the growing demand for TCOs, which are essential for a range of electronic applications. However, the financial burden associated with traditional TCO materials can be a major barrier. Huda points out, “Approximately 40% of the total cost of dye-synthesized solar cells can be attributed to TCO films. Our goal was to create a more affordable alternative without compromising performance.”
Utilizing the sol-gel dip coating method, the team successfully produced thin films with a thickness of 144 nm and a resistivity of 2.27 Ω-cm after 16 dips in the sol-gel solution. The films demonstrated an impressive average transmittance of around 70% across a wavelength range of 300–1200 nm, alongside a band gap of approximately 3.533 eV. These characteristics position SnO2 as a competitive alternative to more expensive TCOs like fluorine-doped tin oxide (FTO) or indium tin oxide (ITO).
The implications of this research extend far beyond the laboratory. If commercialized effectively, SnO2 TCO could drastically reduce costs in the solar cell industry, making renewable energy technologies more accessible. Huda explains, “Our simulations indicate that using this TCO could yield a maximum efficiency of 17.525% in cadmium telluride (CdTe) solar cells. This could be a game changer for solar technology, especially in regions where cost is a critical factor.”
As construction projects increasingly incorporate sustainable technologies, the ability to produce high-performance, low-cost TCOs could accelerate the adoption of solar panels in new buildings. This research aligns with global trends towards energy efficiency and sustainability, making it particularly timely as governments and organizations strive to meet ambitious climate goals.
The findings from this study not only highlight the potential of SnO2 in the realm of electronics but also underscore the importance of local resources and innovation in driving down costs. With the right support and investment, this research could lead to significant advancements in the construction sector and beyond.
For more details about this groundbreaking research, you can visit the Institute of Energy, University of Dhaka.