At the TaiyangNews High Efficiency Solar Technologies 2024 Conference in December 2024, Jiajun Ye, Senior Product Manager at Risen Energy, underscored the company’s unwavering commitment to HJT as the cornerstone of its PV advancements. He emphasized HJT's distinct advantages, including higher efficiency and enhanced reliability, as key factors behind the vertically integrated manufacturer’s strategic choice. Talking the company’s efforts in this direction on day 2 of the 4-day conference, Ye highlighted Risen Energy’s pioneering role in reducing silver consumption, a critical factor in lowering production costs. “We are the first in the industry to bring silver usage below 6 mg/W, compared to the average of 6.6 mg/W for PERC and 9 mg/W for TOPCon,” Ye stated. The company aims to push this even further, targeting 0.5 mg/W. “With this breakthrough, we’ve effectively overcome one of the biggest barrier to the mass production of HJT,” he added. In addition to silver reduction, Risen Energy has implemented several key technical innovations to enhance cell performance. Among these is the use of an advanced TCO layer deposited with high-mobility target material. This significantly improves electrical conductivity, thereby boosting cell efficiency. The adoption of stencil screen printing technology with unrestricted openings and extended mesh lifespans further contributes to performance improvements. This technique lowers paste consumption, reduces metallization costs, enhances printing quality, and optimizes overall cell performance, explained Ye. He also touched upon the UVID challenges for n-type modules. Risen Energy addresses this by using UV down-conversion film. The encapsulant converts the UV into the blue spectrum, reducing degradation while enhancing power output. Risen Energy’s upcoming Hyper-ion Pro module with 730W output and 26.4% cell efficiency will incorporate the above technical improvements when it is available commercially in Q1 2025. For 2025, the company’s technical roadmap will target 740W with a 26.8% HJT module, followed by a further increase to 760 W and 27.2% cell efficiency. In 2027, it plans to venture into perovskite-HJT. For more presentation videos and conference summaries for all 4 days of the TaiyangNews High Efficiency Solar Technologies 2024 Conference, click here for days 1 and 2, and here for days 3 and 4.
