Solar energy has attracted attention as a future energy source, and among several BC solar cells (HPBC, TBC, HBC) in the next generation of products, HPBC is a direction for the development of solar cell technology.
HPBC solar cells combine the advantages of passivated emitter and back surface passivation contact technology (PERC), and adopt a back contact design. This structure typically forms passive contacts on the back of solar cells to reduce frontal obstruction and improve light absorption.
HPBC solar cells, also known as Hybrid Passivated Back Contact solar cells, are a new generation of high-efficiency solar cell technology.
Structural features: HPBC solar cells combine the advantages of passivated emitter and back surface passivated contact (PERC) technology, and adopt a back contact design. This structure typically forms a passivated contact on the back of the solar cell to reduce frontal obstruction and improve light absorption.
Passivation effect: The passivation layer of HPBC solar cells helps reduce surface recombination and increase the open circuit voltage (Voc) of solar cells.
Technical features: HPBC solar cell technology combines TOPCon and IBC technologies, moving all the metal grid lines responsible for collecting and transporting charge carriers in the solar cell to the back of the solar module, so that the front of the solar cell is unobstructed by grid lines, thereby improving light utilization and photoelectric conversion efficiency.
Technical advantages: HPBC solar cells have the characteristics of stronger light absorption, higher conversion efficiency, more stable power transmission, more aesthetically pleasing products, and more mature and reliable technology.
Application scenario: HPBC solar cells are naturally suitable for distributed photovoltaic scenarios, especially BIPV (photovoltaic building integration), which can fully combine the beauty and architectural art of BC solar modules.
TBC solar cells, also known as POLO-IBC solar cells, are solar cells formed by the combination of TOPCon and IBC technologies.
Structural features: TBC solar cells adopt Tunnel Oxide Passivation Contact (TOPCon) technology and apply it to the back contact structure. This design utilizes the high passivation quality and good contact characteristics of TOPCon technology.
Efficiency potential: TBC solar cells have high efficiency potential due to their excellent passivation performance and back contact design.
Industrialization progress: Currently, the TBC solar cell technology route is still in the laboratory research stage, and there are still many problems that need to be solved urgently to promote the industrialization process.
In the short term, the development prospects of TBC solar cell routes are broader because TOPCon’s process route is more mature and cost-effective compared to HJT’s process route, and TBC production lines are partially compatible with TOPCon production lines.
Application potential: TBC solar cells can be applied not only to N-type crystalline silicon substrates, but also to P-type substrates, with great potential for improving photoelectric conversion efficiency and reducing costs.
HBC solar cell, also known as heterojunction back contact crystalline silicon solar cell, is an efficient solar cell that combines heterojunction (HJT) technology and interdigital back contact (IBC) technology.
Structural features: HBC solar cells adopt heterojunction technology and combine it with a back contact structure. This structure typically forms a heterojunction on the back of solar cells to achieve efficient carrier collection.
High efficiency potential: HBC solar cells are considered a strong candidate for high-efficiency solar cells due to their excellent heterojunction characteristics and back contact design.
HPBC, TBC, and HBC solar cells all represent advances in photovoltaic cell technology, and they have improved the photovoltaic conversion efficiency of solar cells through different technological paths. TBC and HBC solar cells outperform classical IBC technology in terms of conversion efficiency.
HBC solar cells combine the surface passivation performance of HJT solar cells with the advantage of no metal shielding on the front of IBC solar cells, possessing the dual advantages of high short-circuit current and high open circuit voltage, representing the highest level of photoelectric conversion efficiency of crystalline silicon solar cells.
