Martin A. Green
19 July 2023
Synopsis
New research achieves a record efficiency of 26.81% in silicon heterojunction solar cells by using nanocrystalline layers instead of conventional ones. This improvement is driven by reduced resistance loss and higher current, addressing the previous limitation of low short-circuit currents in such cells. Heterojunction solar cells show promise for photovoltaic cost reductions due to their high energy conversion efficiency and open-circuit voltage approaching fundamental limits.
 |
| Image used for representational purposes - Open AI |
Silicon heterojunction solar cells represent a promising photovoltaic approach, yet low short-circuit currents limit their power conversion efficiency. New research shows an efficiency record of 26.81% driven by lower resistance loss and higher current by replacing the conventional front and rear amorphous doped-silicon layers with nanocrystalline layers.
Improved energy conversion efficiency has been a key contributor to recent photovoltaic cost reductions1. Advanced cell technologies such as heterojunction (HJT) solar cells can sustain these cost reductions, however, they must have a clear conversion efficiency advantage over incumbent technologies to offset their higher per-unit fabrication costs. Heterojunction solar cells traditionally suffer from relatively low short-circuit current (ISC) compared to these incumbents, but they more than compensate for this disadvantage with their very high open-circuit voltage (VOC), approaching fundamental limits2,3.
Source: www.nature.com
energygasoil@gmail.com
Comments
Post a Comment