In the photovoltaic (PV) industry, heterojunction (HJT) is distinguished by its bifacial-symmetrical cell structure. But what does that really mean, and why is it important? Both the front and back of an HJT cell are designed with identical layer structures. This design is not just visually balanced—it reflects a sophisticated engineering approach that brings significant technical advantages.
01: Unique Bifacial-Symmetrical Structure
Unlike other solar cell technologies that utilize varied materials or demonstrate inconsistent surface behavior, Heterojunction (HJT) cells exhibit uniform structure and performance on both the front and back sides. This intrinsic symmetry contributes to enhanced bifacial efficiency, reduced thickness, and exceptional flexibility—positioning HJT technology as a leading innovation in the advancement of next-generation photovoltaic solutions.
02: Built for Bifacial Yield
HJT cells are designed to operate with equal efficiency on both the front and rear surfaces, effectively capturing both direct and reflected sunlight. When assembled into modules, they can achieve bifaciality exceeding 95%, making them particularly well-suited for high-albedo environments—such as snow-covered or reflective surfaces—where backside energy generation is significantly enhanced.
03: Simplified Manufacturing Process
The symmetrical structure of HJT cells allows for a simplified, mirrored manufacturing process on both sides—reducing complexity, minimizing process variation, and boosting overall production efficiency and yield.
04: Superior Durability
Thanks to its symmetrical structure, the stress can be distributed evenly across the cell, reducing the likelihood of deformation during temperature fluctuations. This results in increased resistance to microcracks, making the cells more durable and reliable.
05: Optimized Passivation
Excellent passivation layers on both sides can effectively address surface imperfections and minimizing charge recombination. This enhances efficiency and ensures the cell delivers consistent, high-performance output.
06: Extreme Lightweight & Flexibility
The consistent material distribution allows for the adoption of thinner wafers and less encapsulation, reducing the overall weight and thickness of the cell. Additionally, this balanced structure helps reduce thermal stress, making the cells more flexible and suitable for lightweight applications.
Click here to view or download the PDF "All About HJT - Why Bifacial-Symmetrical Cell Structure Matters?" for a comprehensive overview.
Click here to view or download the PDF "All About HJT - Why Bifacial-Symmetrical Cell Structure Matters?" for a comprehensive overview.
For a more in-depth exploration of HJT solar cell technology, please refer to “All About HJT – The Secret of Heterojunction Solar Cell Technology."
