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BC type solar cells, that is, Back Contact solar cells, is a general term for various types of back-contact structural crystalline silicon solar cells, mainly including IBC, HBC (HJT+IBC), TBC (TOPCon+IBC), HPBC, etc. There is no grid line on the front surface of the solar cell, and the positive and...

Double-sided passivated emitters and backside cells (PERCs) currently have the highest share of the PV market. However, heterojunction (HJT) and tunnel oxide passivation contact (TOPCon) solar cells are expected to gain significant market share soon. Despite technological advances, concerns about th...

Researchers at the University of North Carolina at Chapel Hill and Arizona State University designed a large-area perovskite-silicon tandem solar cell with an open area of 24 square centimeters and achieved a steady-state efficiency output of 25.1%. Current-voltage curve of a perovskite micromodule...

1. XBC solar cell technology   (1) BC is not a completely new solar cell technology   Back Contact, metal electrodes are arranged on the back of the solar cell in a cross-finger shape, creating more light-absorbing area for the front and improving the overall photoelectric conversion effic...

First, copper electroplating helps reduce costs and increase efficiency in the metallization of photovoltaic solar cells 1.1 Constrained by high-cost silver paste, the metallization process of photovoltaic cells needs to be innovated urgently Photovoltaic solar cells are the most core devices for ph...

The efficiency of N-type polysilicon backside passivated contact (PSPC) cells manufactured on industrial production lines has increased from 20.7% to 23.6% or higher in the past three years. The rapid efficiency climb is strongly supported by metallized pastes that can contact both the boron emitter...

Frontal metallization: efficiency accelerator   n-TOPCon SE creates more room for efficiency   Compared with the conventional p+ emitter, the p+ emitter SE process has a shallower junction in the non-metallized region, a deeper junction in the metallized region, and the surface concentrati...

In the past three to five years, the photovoltaic industry's solar cell technology has been rapidly upgraded and iterated, and high-efficiency PERC solar cells have gradually replaced traditional all-aluminum back-field solar cells and become a new generation of "conventional" solar cells. So, after...

  What is photovoltaic silver paste?   The main principle of photovoltaic power generation is the photovoltaic effect of semiconductors, that is, when the silicon wafer is illuminated, the charge distribution state in the body changes to generate electromotive force, converting photons int...

   In the manufacturing process of solar cells, in order to prepare solar cell contact electrodes, it is necessary to print metal paste on silicon wafers using screen printing technology. After the sintering process, front and back electrodes are formed on the surface of the solar cell thr...

  Laser-enhanced contact optimization (LECO), or laser-enhanced contact optimization, patented by Cell Engineering GmbH in 2016, replacing the conveyor furnace (FFO) technology typically used for TOPCon solar cell.   In principle, the current formed by the laser is transmitted along the p...

After purposeful doping, the semiconductor bulk silicon introduces trace impurities to become an extrinsic semiconductor, which is divided into N-type and P-type two categories. 1. N-type crystalline silicon When the crystal silicon is mixed with trace impurities Group V elements, its five valence e...