A development in solar cell effectiveness

Jul 28, 2020 06:33 PM ET
  • A research group led by Prof. Chen Tao and also Prof. Zhu Changfei, as well as their partner Prof. Hao Xiaojing at UNSW, developed a hydrothermal deposition method for the synthesis of antimony selenosulfide for solar cell applications. With this absorber material, the solar cell breaks the 10% benchmark efficiency barrier. This outcome has been released in Nature Energy qualified "Hydrothermal deposition of antimony selenosulfide slim movies allows solar cells with 10% performance."
A development in solar cell effectiveness
Image: CC0 Public Domain

Antimony selenosulfide, Sb2(S, Se)3, as a ROHS-compliant as well as earth-abundant light harvesting product, has received raising passion throughout the past few years. The band space of Sb2(S, Se)3 is tunable in the variety of 1.1-1.7 eV, pleasing the demand for ideal sunlight collecting. In addition, Sb2(S, Se)3 has a high termination coefficient, and film density of about 500 nanometers can absorb adequate light irradiation. With these benefits, Sb2(S, Se)3 is an encouraging power product for the applications of lightweight and mobile electrical energy generation gadgets.

Considering that Sb2(S, Se)3 includes earth-abundant aspects as well as has superb security, the improvement in breaking the 10% effectiveness criteria will break ground for a commercialization path. In this study, the authors located that the hydrothermal deposition at supercritical conditions makes it possible for the generation of portable and flat movie with homogeneous element distribution in the side direction. These remarkable characteristics allow the efficient provider transportation and suppression of detrimental recombination. With additional optimizations of the band gap, cation/anion ratio, crystal positioning and also issue homes, the gadget effectively accomplishes a record power conversion performance.

A customer of this paper applauded the work, commenting that "This paper offers a landmark efficiency value for Sb2(S, Se)3 solar cells breaking the 10% obstacle. This success loses brand-new light on the examination as well as application of Sb2(S, Se)3 ...".