Prof. Yang Yang Lab - the highest power conversion efficiency for perovskite solar cells can be up to 19.3%!

Prof. Yang Yang Lab - the highest power conversion efficiency for perovskite solar cells can be up to 19.3%!

Enlitech’s QE-R system at Yang Yang Lab. Prof. Yang Yang uses our QE-R system to measure quantum efficiency for solar cells.

Prof. Yang Yang Laboratory team at University of California, Los Angeles (UCLA) published a latest research paper “Interface engineering of highly efficient perovskite solar cells” in Science on 1st August 2014, it showed that the highest power conversion efficiency for perovskite solar cells can be up to 19.3% in a planar geometry without antireflective coating. As a professional manufacturing and service company to photovoltaic field, it is a great honour to know that our QE-R Total Quantum Efficiency Solutions for Solar Cells can be of great use for our customer’s research work. For more information about the research paper, please refer to the abstract and efficiency measurement figures as follow:

Advancing perovskite solar cell technologies toward their theoretical power conversion efficiency (PCE) requires delicate control over the carrier dynamics throughout the entire device. By controlling the formation of the perovskite layer and careful choices of other materials, we suppressed carrier recombination in the absorber, facilitated carrier injection into the carrier transport layers, and maintained good carrier extraction at the electrodes. When measured via reverse bias scan, cell PCE is typically boosted to 16.6% on average, with the highest efficiency of ~19.3% in a planar geometry without antireflective coating. The fabrication of our perovskite solar cells was conducted in air and from solution at low temperatures, which should simplify manufacturing of large-area perovskite devices that are inexpensive and perform at high levels.

Efficiency measurements. (A) J-V curves for the champion cell without antireflective coating. (B) Histogram of solar cell efficiencies for 40 devices. (C) Normalized EQE spectrum of a typical cell. (Inset) The corresponding J-V curve of the device.

Yang Yang :http://yylab.seas.ucla.edu/facility.aspx

2014-08-15