What is a PM6 Py-V based device?

The PM6:PY-V- γ -based device yields a PCE of 17.3%, with a VOC of 0.909 V, a JSC of 25.2 mA cm −2 and an FF of 75.7%.

What is the photovoltaic performance of 65 m & 55-m devices?

The photovoltaic performance of the 65-μm and 55-μm devices is shown in Fig. 3c. The short-circuit current density (Jsc), open-circuit voltage (Voc), fill factor (FF) and PCE are 37.65 ± 0.09 mA cm−2, 0.752 ± 0.002 V, 82.40 ± 0.99% and 23.31 ± 0.33%, respectively, for the 65-μm device.

Do flexible SHJ modules address load-bearing issues in building-integrated photovoltaics?

The flexible SHJ modules demonstrated in this study may address the load-bearing issue encountered in the fast-growing research field of building-integrated photovoltaics and enable c-Si solar modules to be attached to building walls with either flat or curved surfaces.

Why is pyo-V used in pm6-py-V host system?

The introduction of PYO-V into the PM6:PY-V- γ host system complements its absorption spectrum, improving its molecular packing, suppressing its charge recombination, and enhancing its polaron generation efficiency.

What is the mass-to-power ratio of SHJ solar modules?

At the module level, the flexible SHJ modules are free from heavy glasses and back sheets (Supplementary Figs. 8and 9), which results in an extremely small mass-to-power ratio of 2.31 g W−1that is much less than the values of 45.57 g W−1and 82.93 g W−1for standard monofacial and bifacial c-Si solar modules, respectively (Fig. 3f).

Why are PCE values higher than JSC values for flexible SHJ solar cells?

These PCEs are higher than the value of 19.67 ± 0.34% for flexible SHJ solar cells fabricated using 60-μm quasiplanar wafers because of the higher Jscvalues of 65-μm (37.65 mA cm−2) and 55-μm (37.59 mA cm−2) devices compared with that of the 65-μm wafer (31.45 mA cm−2; Supplementary Fig. 7).