Hanergy Single-Junction GaAs Solar Cell Achieves World Record 28.9% Efficiency

Hanergy Thin Film Power Group based in Beijing reported recently that US’s National Renewable Energy Laboratory measured the conversion efficiency of the single junction gallium arsenide (GaAs) solar cell from its US-based subsidiary Alta Devices’ at 28.9%. According to the NREL, Alta Device’s module achieved the world’s highest conversion efficiency for a single-junction solar battery. Hanergy says that such solar cells can power a broad range of products including unmanned aerial vehicles (UAV), electric vehicles, and even smart sensors that were previously limited by low-efficiency solar solutions.

Alta Devices single-junction solar cell achieves record conversion efficiency of 28.9% according to NREL testing.

Alta Devices single-junction solar cell achieves record conversion efficiency of 28.9% according to NREL testing.

Hanergy Now Boasts Two World Records

Hanergy’s U.S. subsidiary Alta Devices first broke the record for single-junction GaAs solar cells in 2010 and since then has broken five conversion efficiency records. With this most recent achievement, Hanergy now holds two world records – the record for single-junction batteries (28.9%) and the one for single-junction battery modules (25.1%).

Commenting on the achievement, Mr. Ding Jianru, CEO of Alta Devices said, “Our latest milestone for utmost solar efficiency represents a breakthrough in Hanergy’s vision for the future of solar energy applications. More so, at Alta Devices, we believe that with fast-tracking trend towards autonomous machines, it’s highly imperative to have sources of power that can be replenished without the interruption. We’re aligned with our goal to continue to produce thin-film solar batteries with efficiencies par-excellence to lead the progressing trend towards autonomous machines.”

During 2017, Hanergy collaborated with Audi on a solar sunroof using GaAs thin film battery technology. Subsequently, Chinese automakers including FAW and BAIC partnered with Hanergy to jointly develop GaAs thin-film solar roofs for multiple car models. Additionally, Hanergy has applied its GaAs thin film solar cells to power drones in the hopes of eventually using the technology for industrial-grade solar drones.