Tuesday , October 4 2022

New research reveals great promise to improve solar cell performance


Compared to the performance of all inorganic perovskites

All inorganic perovskites match their hybrid counterparts in terms of efficiency. Credit: Template by Xie Zhang

New research reveals the promise of all-in-one inorganic pyruvate solar cells to improve the efficacy of solar cells.

Hybrid organic-inorganic perovskites have already demonstrated the highest photovoltaic efficiencies of WFP up to 25%. The dominant wisdom in the field is that the organic (carbon- and hydrogen-based) molecules in the material are key to achieving this spectacular performance.

New research not shown in the UC Santa Barbara Materials Department shows that this assumption is incorrect, but also that all inorganic materials have the potential to outperform hybrid perovskites. The results are published in the article “All Inorganic Health Perovskites as Candidates for Solar Cells,” which appears in the Journal’s October 20, 2021 issue. Cell Reports Physical SciencesGeneral Chat Chat Lounge

“In order to compare the materials, we have performed comprehensive simulations of the birthing mechanism,” explained Ax Zhang, a researcher conducting the study. “When the light shines on the solar cell material, the carriers that produce the photons have a current, such that b-coupling destroys these carriers and thus reduces their efficiency. Thus defects act as killers of efficiency.

To compare the inorganic and hybrid perovskites, the researchers studied two prototype materials. ن Non-substances do not contain lead and iodine essence, but in one substance the isotherm of the crystal is supplemented by an inorganic element cesium, whereas in ۾, the organic methylmonium molecule is present.

Experimentally adjusting these processes is very difficult, but the latest quantitative mechanical calculations can accurately predict retention rates, thanks to a new method that was carried out in the UCSB content group by Professor Chris van der Waal. , Who credited Mark. Tovrensky, a senior graduate student in the group, helped compose the calculation rates for writing code.

“Our methods are very powerful in determining what pitfalls can cause career loss,” said Turensky. “It is interesting to see how the unapproved, inefficient generation of renewable energy is applied to one of the critical issues of our time.”

Moving simulations have shown that defects are common in non-material materials that give rise to relatively ((and relatively be gentle) b) ligand surfaces, however, the organic molecules present in the hybrid perovskite can break when the hydrogen atoms result, “Empty spaces” severely degrades performance – the presence of a molecule is thus detrimental, rather than as an asset, for the content’s overall performance.

Why, then, has this not been felt empirically? Mainly because it is more difficult to grow high quality layers of inorganic material. They have a tendency to adapt to other yin crystal structures, and the need for more structured experimental efforts is needed to promote the formation of the desired structure. Recent research has shown, however, that achieving the preferred structure is certainly possible. To date, however, the difficulty states that all and all inorganic perovskites have not received as much attention to date.

“We hope that our findings on expected performance will stimulate more activity that directs the production of inorganic perovskites,” Van der Waal concluded.

Reference: “All inorganic halide perovskites as candidates for efficient solar cells” by Xie Zhang, Mark E. Turiansky and Chris G. Van de Walle, October 11, 2021; Cell Reports Physical SciencesGeneral Chat Chat Lounge
DOI: 10.1016 / j.xcrp.2021.100604

Funding for this research was provided by the Energy Department of Science, Office of Basic Energy Sciences. Were calculated at the National Energy Research Scientific Computing Center.

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