Science and Technology Innovation Board Photovoltaic Single Crystal Furnace

What is CZ silicon single crystal growth process?

The Cz silicon single crystal growth process is in a complex environment such as high temperature (1693 K), vacuum (1000 Pa), inert gas (Ar), and strong magnetic field (0.3 T ∼ 0.5 T), as shown in Fig. 2.

Is SnSe a crystalline material?

Recently, we showed that SnSe exhibits one of the lowest lattice thermal conductivities known for crystalline materials (<0.4 W m −1 K −1 at 923 K) (18) and without any doping exhibits record high ZT s along the b and c crystallographic directions at 723 to 973 K (fig. S1).

Can thin-film solar cells be used in building-integrated PV?

Thin-film solar cells deposited on thin foils are also expected to find new applications in areas where low weight-specific power (in terms of watts per gram) is desired, and in novel forms of building-integrated PV where flexible form factors or partial transparency for visible light are desired.

Do solar modules operate under STC conditions?

Furthermore, in practice, solar modules never operate under conditions equal to the standard test conditions (STC). The solar spectrum and intensity change during the day and vary with the time of year. The dependence of efficiency on incident power is generally lowest for cells with high FF.

What is the uncertainty of ZT measurement in SnSe crystals?

(A) ZT values along different axial directions of hole-doped SnSe and undoped SnSe crystals (18); the ZT measurement uncertainty is about 20%.

Are monocrystalline Si cells better than thin-film single-crystalline GaAs cells?

Monocrystalline Si cells (record efficiency 25.6%) have reached near-complete light trapping and carrier collection and are mostly limited by remaining carrier recombination losses. In contrast, thin-film single-crystalline GaAs cells (28.8%) show only minimal recombination losses but can be improved by better light management.