Maxwell claims 26.92% efficiency for heterojunction solar cell

<p class="p1"><span class="s1">The Chinese PV equipment provider said the result was certified by Germany's Institute for Solar Energy Research in Hamelin (ISFH). The cell was fabricated with Maxwell's in-house heterojunction production-line equipment and an end-to-end process flow.</span></p><p>China-based PV equipment supplier <a href="https://www.pv-magazine.com/2022/09/06/chinese-pv-industry-brief-maxwell-secures-orders-for-hjt-lines/" rel="noopener" target="_blank">Suzhou Maxwell Technologies Co., Ltd.</a> has announced it achieved a power conversion efficiency of 26.92% for a heterojunction (HJT) solar cell.</p>
<p>The result was independently certified by the <a href="https://www.pv-magazine.com/2024/11/21/trina-solar-claims-record-breaking-efficiency-of-26-58-for-topcon-solar-cell/" rel="noopener" target="_blank">Institute for Solar Energy Research Hamelin</a> (ISFH) in Germany.</p>
<p>The cell also recorded an open-circuit voltage of 951.7 mV, a short-circuit current of 9.112 mA, and a fill factor of 86.75%.</p>
<p>Maxwell said the device is a full-area cell based on a 210 mm half-cell format, with an active area of 220.76 cm². It was fabricated using the company’s in-house HJT production-line equipment and an end-to-end process flow.</p>
<p>According to Maxwell, the cell uses industrial-grade silicon wafers and screen-printed electrodes, and incorporates bilateral microcrystalline-layer engineering, differentiated surface texturing, and wafer-edge optimisation. These measures are designed to reduce interfacial recombination losses, improve carrier transport and passivation balance, and cut optical and edge-related losses, while maintaining manufacturability, the company said.</p>
<p>The company noted that this result builds on its previous 26.8% HJT cell efficiency announced in November 2025, representing an improvement of 0.12 percentage points in just over two months, although no additional technical details were provided.</p>
<p>Currently, Longi holds the world record for HJT cell efficiency with a <a href="https://www.pv-magazine.com/2024/11/18/longi-unveils-heterojunction-bc-solar-cells-with-27-3-efficiency/" rel="noopener" target="_blank">27.3%-efficient device unveiled in November 2024</a>, which features a back-contact (BC) configuration. For HJT cells without BC architecture, the world record is held by Trina Solar, whose device reached <a href="https://www.pv-magazine.com/2024/12/19/trina-solar-hits-new-27-08-record-for-hjt-solar-cell/" rel="noopener" target="_blank">27.08% efficiency in December 2024</a>.</p>