The world's largest module supplier, JinkoSolar Holding Co., Ltd. from China, said it has achieved a world record efficiency of 23.95% for p-type monocrystalline cells. The achievement has been certified by the Photovoltaic and Wind Power Systems Quality Test Center at the Chinese Academy of Sciences (CAS).
In November 2017, the Chinese company already broke its own record – when it achieved 23.45% efficiency, beating its previous efficiency of 22.78%.
End of February, Chinese vertically-integrated solar manufacturer LONGi Solar Technology Co., Ltd. announced a 23.6% world record conversion efficiency with its monocrystalline passivated emitter rear contact (PERC) solar cell technology (see 23.6% PERC Mono Cell World Record from LONGi).
"The continued gain in efficiency is a result of the further optimization of selective emitter (SE) formation, silicon oxide passivation and the rear side passivation," said JinkoSolar. For the 23.95% achievement, JinkoSolar says it used its unique light-capturing technology with black silicon. The multi-layer ARC technology reduced the front side reflectivity of cells to lower than 0.5%. This ensures the growth of the short-circuit current.
It also made use of an advanced grid design and a new type of screen-printing paste to reduce the series resistance and the metal/silicon interface compound probability owing to promotion of solar cell fill factor.
"The introduction of novel passivation and selective contact technology have successfully broken the technical bottleneck created by traditional PERC technology and represents a significant step forward for our p type solar cells with their previous efficiency record of 23.45% in 2017," said JinkoSolar CEO Kangping Chen.
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