Improved Photovoltaic Performance of PEDOT:PSS/C-Si Hybrid Solar Cells with an Inverted Structure.

In this study, n-type crystalline silicon and organic conjugated polymer PEDOT:PSS were combined to prepare backside Si/PEDOT:PSS hybrid heterojunction solar cells by a low-temperature solution method. This provides a novel approach to reduce the production cost of crystalline Si solar cells and improve device efficiency. To address the issue that the contact performance of PEDOT:PSS film deteriorates due to the pyramidal structure of the Si surface, the contact performance of PEDOT:PSS and Si interface was optimized by using high-speed dual spin-coating technology, and the power conversion efficiencies (PCE) reached 15.

Selenium-Modified Biochar Synergistically Achieves the Safe Use of Selenium and the Inhibition of Heavy Metal Cadmium.

To address cadmium pollution in China's cultivated land, chitosan, inorganic and organic selenium were used to modify rice husk charcoal for cadmium inhibition. Basic physicochemical properties of rice husk carbons were characterized (BET, FTIR, XRD, Zeta potential). Kinetic and isothermal adsorption experiments studied the adsorption of Cd by modified biochar under different pH and dosages.

The interaction between selenium and other elements in soil and rice roots shaped by straw and straw biochar regulated the enrichment of selenium in rice grain.

The absorption and transport of selenium (Se) in rice depend on the shared transport proteins and channels with other elements. However, the interactions between Se and other elements within the soil-rice system and their relationship with Se-enriched rice are still not well understood. Hence, we conducted pot experiments to investigate the transformation of Se forms in soil and the absorption and enrichment of Se in rice, which varied with other elements influenced by straw and straw biochar returning in Se-rich red paddy soil.