Singapore Develops Record-Efficiency Solar Cells
Singapore, Thursday, 3 July 2025.
Researchers in Singapore have achieved a solar efficiency of 26.4% with new tandem cells, outpacing other technologies and promising significant strides for renewable energy solutions.
Introduction to Tandem Solar Cells
In a revolutionary breakthrough in the solar cell sector, researchers from the National University of Singapore have succeeded in developing perovskite–organic tandem solar cells with a certified efficiency of 26.4%. This surpasses not only single-junction perovskite cells but also previous tandem devices using copper-indium-gallium-selenide (CIGS) technology, marking a significant milestone in the advancement of solar energy technology [1][2].
Technological Advancements and Methodology
The new solar cells use a pioneering asymmetric narrow-bandgap organic absorber known as P2EH-1V, which significantly enhances sunlight capture by targeting the near-infrared spectrum. This innovative method allows the tandem cells to achieve higher efficiencies, recorded at 26.7% for 1-cm² devices during lab tests. Certificates from the Shanghai Institute of Microsystem and Information Technology support these findings, putting forth a power conversion efficiency (PCE) of 26.4% with negligible hysteresis [1][2].
Potential Applications in Flexible Electronics
These lightweight and flexible solar cells present numerous advantageous applications, particularly in power-conscious devices such as drones, wearable electronics, and smart fabrics. Their unique properties allow for roll-to-roll production and integration onto diverse surfaces, a potential boon for the future of independent power generation in wearable tech and AI endpoints [1][2].
Implications for Future Solar Technology
Such advancements not only demonstrate significant potential to cross the 30% efficiency threshold in laboratory-based tests but also promise commercial scalability. These innovations could potentially transform how solar cells contribute to sustainable energy strategies globally, marking a critical evolution towards greener global energy practices [1][3].