[Remediation Effect of Iron-manganese Composite-modified Biochar from Different Biomasses on Cd-contaminated Alkaline Soil].

To investigate the remediation effect of iron-manganese-modified biochar from different biomasses （FM-BC） on Cd-contaminated alkaline soil, FM-BC was prepared using branches of , durian shells, and corn stalks. The characteristics of FM-BC, the adsorption of Cd（Ⅱ） in water, and the available, fraction of Cd in alkaline soil were studied using bath adsorption and soil culture experiments. The results showed that the specific surface area, total pore volume, and oxygen content of FM-BC were significantly improved.

Highly passivated TOPCon bottom cells for perovskite/silicon tandem solar cells.

Tunnel oxide passivated contact (TOPCon) silicon solar cells are rising as a competitive photovoltaic technology, seamlessly blending high efficiency with cost-effectiveness and mass production capabilities. However, the numerous defects from the fragile silicon oxide/c-Si interface and the low field-effect passivation due to the inadequate boron in-diffusion in p-type polycrystalline silicon (poly-Si) passivated contact reduce their open-circuit voltages (Vs), impeding their widespread application in the promising perovskite/silicon tandem solar cells (TSCs) that hold a potential to break 30% module efficiency. To address this, we have developed a highly passivated p-type TOPCon structure by optimizing the oxidation conditions, boron in-diffusion, and aluminium oxide hydrogenation, thus pronouncedly improving the implied V (iV) of symmetric samples with p-type TOPCon structures on both sides to 715 mV and the V of completed double-sided TOPCon bottom cells to 710 mV.