Progress in research on solar cell characteristics

What are the parameters of a solar cell?

Generally, the open-circuit voltage ( VOC ), fill factor ( FF) and short-circuit current density ( JSC) of solar cells are defined by the current density and voltage (J–V) properties of the solar cells [ , , ]. All of these parameters have intimate connections to the photoactive materials (acceptor and donor materials).

How can organic solar cells improve power conversion efficiency?

The development of novel acceptor and donor materials, interfacial materials for better charge-carrier collection, and optimization of phase-separation morphology contribute to remarkable enhancements in the power conversion efficiency (PCE) of organic solar cells (OSCs) has reached 19%.

Do solar cells change physics and chemistry?

Although the fundamental physics and chemistry of a particular solar cell do not change while scaling up the size of a cell, maintaining the electronic quality over large areas and achieving the high manufacturing yields necessary to be able to build modules are challenging and require the ability to reproducibly fabricate large-area cells.

Are solar cell efficiencies based on electron-hole recombination?

Moreover, we present the rationale behind the theoretical assessment of solar cell efficiencies, highlighting and quantifying the impact of both electronic disorder in the solar absorber material and electron–hole recombination (radiative versus non-radiative) on the efficiency of a cell.

Can solar cells achieve a PCE of more than 20%?

Several challenges remain in the way of achieving PCEs of more than 20%. However, maintaining the long-term stability and higher efficiency of OSCs compared to other types of solar cells is still a major impediment to their commercialization.

What are the advantages of SHJ solar cells?

SHJ solar cells not only have the advantages of high conversion efficiency and high open-circuit voltage, but also have a low temperature coefficient and free from potential induced degradation (PID). For SHJ solar cells, the passivation contact effect of the c-Si interface is the core of the entire cell manufacturing process.