What Is The Difference Between TOPCon, HPBC, HJT, PERC?

The differences between TOPCON, HPBC, HJT, and PERC PV Module mainly lie in Solar cell technology, conversion efficiency, process complexity, and cost.

1. Solar Cell technology:

TOPCON is a Solar cell technology based on N-type silicon wafers. It utilizes a thin tunnel oxide layer and highly doped polycrystalline silicon film in the metal electrode contact region to form a passivated contact structure, thereby improving power generation efficiency.

HPBC is an independently developed cell technology based on N-type silicon wafers by Longi Green Energy Technology Co., Ltd. It adopts high-temperature processes and has a relatively high conversion efficiency.

HJT is a heterojunction solar cell that mainly involves changing the positive N-type crystalline silicon layer to amorphous silicon and using N-type silicon wafers and amorphous silicon to form a PN junction, reducing recombination losses at the PN junction.

PERC is emitter passivation and back contact cell that uses oxide local passivation technology to increase the limit efficiency to around 23%.

2. Conversion Efficiency:

The theoretical limit of TOPCON is relatively high and has significant room for improvement. 

Currently, the conversion efficiency of TOPCON has reached around 25%.

The conversion efficiency of HPBC is over 25%.

The conversion efficiency of HJT is slightly higher than that of PERC batteries, up to 24.5%.

The conversion efficiency of PERC is generally around 23%.

3. Process complexity:

The process flow of TOPCON is three steps more than PERC, with a total of 12 processes.

The process flow of HPBC is similar to that of PERC but includes high-temperature processes.

The process flow of HJT  is relatively simple with only seven processes.

4. Cost:

Due to the complex process and difficulty in mass production, the cost of TOPCON is similar to that of PERC.

HPBC has a relatively low cost mainly benefiting from its high-temperature processes and mature production processes.

The cost of HJT is relatively high due to its low-temperature processes and high equipment requirements.

5. Related PV Modules: Click on different models to learn more.

PERC

CanadianSolar: CS6W 550-560W  |  CS7N 660-675MS  |  CS6L 455-465MS

LONGI: LR5-72HPH 550-560M  |  LR5-72HBD-545-555M

JA Solar: JAM72S30 550-555MR  |  JAM72S20 460-465/MR  |  JAM78S30 570-610/GR  |  JAM72D30 560-580/LB

Jinko Solar: JKM 550-560M-72HL4-V  |  JKM 545-555M-72HL4-BDVP

HPBC

LONGI: LR5-72HTH 575-590M  |  LR5-54HTH 420-455M  |  LR5-54HTB 430-450M Black  |  LR5-72HTH 580-600M(Anti-dust)

TOPCon

Jinko Solar: JKM 440-450M-54HL4R-B  |  JKM 580-590N-72HL4-V  |  JKM 580-590N-72HL4-BDV

CanadianSolar:  CS6W 575-585T  |  CS6.1 605-620-72TD  |  CS7N 680-700TB-AG  |  CS6R 440-445T

JA Solar: JAM72D40 550-580/MB

HJT

CanadianSolar: CS6R 425-440H-AG 

For more information, please feel free to contact us.

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