The aluminium back surface field (Al-BSF) solar cell has been the working horse for the photovoltaic industry in the recent decades. However, from 2013 the industry is changing to the so-called PERC (passivated emitter rear contact) structure.

Apr 1, 2002 · With the reduction of solar cells thickness, back surface field (BSF) becomes more and more interesting in order to decrease the back surface recombination velocity and to increase collection efficiency.

Introduction of the rear surface passivation with aluminium oxide by Plasma Enhanced Chemical Vapour Deposition (PECVD) and formation of a local Back Surface Field (BSF) by laser ablation of the rear passivation layer and Al alloying.

Oct 1, 2023 · In this paper, the impacts of the structure of PERC and Al-BSF cells on the separation behavior of dominant Al impurity were studied. The structure and component difference between the PERC cells and Al-BSF cells was first clarified.

Jun 29, 2020 · Passivated emitter rear contact (PERC) solar cell involves upgraded adaptation of technology over the existing silicon wafer-based aluminium back surface field (Al-BSF) solar cell. The lower efficiency of Al-BSF is caused by a few drawbacks e.g. higher rear surface recombination and weaker electric field at the rear surface.

Sep 1, 2021 · Traditional aluminum back surface field (Al-BSF) multi-crystalline silicon (mc-Si) solar cells have been favored by the market for a long time due to their low cost. However, the Al-BSF formed after Al screen printing and firing restrict the doping profile and the passivation effect.

Apr 1, 2002 · Request PDF | Aluminum BSF in silicon solar cells | The purpose of this work is to develop a back surface field (BSF) for industrial crystalline silicon solar cells and thin-film solar cells...

The aim of this work is to present the development and comparison of thin n + pp + industrial bifacial silicon solar cells produced with the local screen-printed Al back surface field (BSF) to those with the selective BSF doped with aluminum-boron.

Sep 16, 2019 · This cell structure, called the aluminium back surface field (Al-BSF) cell, has a practical upper limit on its power conversion efficiency (PCE) of only ~20%, compared to the theoretical...

Jul 9, 2021 · One of methods to produce BSF is by introducing highly doped layer on rear surface of the wafer. Screen printed Aluminum and rapid thermal alloying are used together in order to get an Al back surface field (Al-BSF) that can lower the effective back surface recombination velocity.