Perovskite solar cells based on screen-printed thin films

All‐Inorganic Perovskite‐Based Monolithic Perovskite/Organic Tandem Solar Cells with 23.21% Efficiency by Dual‐Interface Engineering

“…Considering the similar grain size distribution of the only bottom MAFm-modified films (Figure 1b-d), it is reasonable to exclude the capability of MAFm on increasing perovskite grain size. Therefore, the enlarged grain size should be ascribed to the perovskite recrystallization process induced by MAFm dissolving the small-size grains, [28,29,32] while the deteriorated morphology (Figure 1g) suggests a subtle dissolution-recrystallization balance with the presence of MAFm. The cracked grain boundaries in the top MAFm-modified films could be explained by the exposure of the vulnerable all-inorganic perovskite film to the atmosphere during the sample transportation from the glovebox to the SEM facility, or the exposure to the electron beam during the test.…”

“…It is exciting to note that ionic liquids are not only good solvents but also natural passivators that provide an additional lever to manipulate the perovskite defects. [28,29] For example, our group demonstrated that by using an ionic liquid, methylammonium acetate (MAAc), to modify the bottom interface of a CsPbI 2.2 Br 0.8 perovskite, the Pb defects at the interface were effectively passivated via the Ac − functional group. This conferred the inorganic perovskite sub-cell with a high PCE of 17.16% and a V OC of 1.31 V, and more encouragingly, when integrated with an organic PM6:CH1007 sub-cell, the monolithic AIPOTSC delivered a high PCE of 22.43% (21.42% certified).…”

Technology Roadmap for Flexible Sensors

“…Current research seeks to endow photovoltaic devices with greater biofunctionality such as conformability, softness, ultralightweight, biocompatibility, biodegradability, etc. , , as well as to develop printable manufacturing. ,− Meanwhile, exploring cheaper, safer, more stable and efficient materials is a constant pursuit. , Solely photovoltaically powered systems are feasible due to the high energy density of solar radiation and the high power density of photovoltaic devices, and tuning the responsive wavelength to the near-infrared region allows for subcutaneous power delivery using an external light source. , …”

The race between complicated multiple cation/anion compositions and stabilization of FAPbI3 for halide perovskite solar cells

“…However, mechanistic investigations as well as in-situ structural analysis on the formation and degradation of FAPbI 3 perovskite are required to truly understand the role of these additives on the perovskite stability and improve the reproducibility of devices. In addition, although large-scale preparation of PSCs with methods such as blade coating, 143 screen printing, 144 slot-die coating 145 and inkjet printing 146 have been developed for other PSCs, their compatibility with phase-pure FAPbI 3 -based PSCs still requires improvement.…”