On August 25, 2026, TaiyangNews hosted its online conference, “Cell & Module Production Equipment and Processing Materials,” bringing together representatives from leading PV manufacturers, equipment suppliers, and research institutions to discuss the latest advances in industrializing high-efficiency cell technologies.
As one of the global leaders in N-type cell technology, JTPV was invited to deliver a keynote presentation. Dr. Xinrui An, R&D Manager at JTPV, presented “JTPV's Progress in High Performance N-type Cells and Modules,” outlining the company's latest advances across its N-type and xBC technology roadmaps and demonstrating the innovation and technical capabilities of China's advanced PV manufacturing sector.
Continuous advances in N-type cell technology: a roadmap toward 650 W+
N-type cells have become a mainstream market technology in recent years. Through continuous innovation, JTPV has developed three generations within its MoNo Series: MoNo 1, MoNo 2, and MoNo 3.
Launched in 2024, MoNo 1 integrates five core technologies, including stacked silicon deposition, optimized emitter metal contact, a gradient-index anti-reflection coating, ultra-fine fingers, and multi-busbars. Following two years of optimization, its mass-production conversion efficiency has remained above 25.5%. MoNo 2, launched in 2025, introduced wave back surface field (Wave BSF) and Half-cut Edge Passivation, raising bifaciality to 90% while further improving efficiency. The latest generation, MoNo 3, combines multi-cut cells with Cut Line and full-edge passivation technologies to reduce module resistance losses and increase the effective power-generating area. Together with silver-lean metallization, this design balances higher power output with cost optimization.
Dr. An noted that there is a clear technical roadmap for N-type modules to move toward 650 W+, which is also the power range required by China's new Grade 1 energy-efficiency threshold. Upgrading from half-cut to multi-cut cells, combined with edge passivation, is a key pathway toward this target.
xBC: assessing the technology's potential through its efficiency ceiling
Alongside the continued advancement of its N-type cell platform, JTPV is accelerating the development of xBC technology. Referring to NREL's efficiency chart, Dr. An noted that most new cell-efficiency records over the past five to ten years have been based on back-contact architectures.
In the latest TaiyangNews ranking of commercial module efficiencies, BC modules reached 25%, compared with approximately 24% for conventional N-type modules and 23.8% for HJT modules.
Dr. An also addressed the practical conditions facing BC adoption. Given today's large installed base of N-type production capacity, the pace of BC deployment is constrained by technical complexity and capital investment. However, xBC offers a high degree of process compatibility with existing N-type production lines, creating an economically viable pathway for future technology upgrades.
From xBC R&D to mass production: advancing a systematic roadmap
JTPV has accumulated more than a decade of experience in BC technology. The company began building its BC patent portfolio in 2012. Its pilot line was completed and produced its first BC cell in 2023. Since then, efficiency has risen steadily from 25.0% to an average of 27.1% on the pilot line, corresponding to module power of approximately 660 W, while its laboratory champion cell has reached 27.4% efficiency.
At the process level, JTPV has continued to address key BC manufacturing challenges, including wet-chemical processing of the P-type region, boron-doped polysilicon preparation, and laser patterning, achieving industry-leading passivation quality. At the module level, JTPV and its customers have jointly developed full-area contact technology to enable a busbar-free design, significantly reducing silver-paste consumption while increasing module power and bifaciality. JTPV has also established a systematic roadmap to raise module bifaciality from 55% to 75% through a series of process optimizations. For single-glass applications, the company has developed a dedicated xBC-S cell version to further improve efficiency.
Innovation at the core of advanced manufacturing
Looking ahead, Dr. An outlined further optimization pathways for xBC, including quarter-cut cells with edge passivation, low-temperature metallization combining PVD and electroplating, and an upgrade to amorphous silicon in the P-type region. These advances could take module power to 690–700 W. Based on JTPV's measured passivation and contact parameters, xBC has a theoretical efficiency ceiling of 29.25%, leaving substantial room for further optimization.
As of the end of June 2025, JTPV's annualized N-type cell production capacity exceeded 40 GW and cumulative cell shipments surpassed 116 GW. The company has also obtained a broad range of domestic and international certifications and assessments, including CNAS accreditation, ISO certifications, and France's ADEME life-cycle assessment.
JTPV will continue to uphold its product philosophy of “high efficiency, reliability, and sustainability,” taking technological innovation as its foundation and quality manufacturing as the basis of its competitiveness. The company remains committed to advancing the industrial application of N-type and next-generation high-efficiency cell technologies and supporting a more efficient and sustainable global clean-energy future.
