Fangyuan Jiang

Aug 14, 2024 | nature.com | Chongwen Li |Fangyuan Jiang |Zhaoning Song |Xiaoming Wang |Adam Balvanz |Esma Ugur | +18 more

AbstractPerovskite tandem solar cells show promising performance, but non-radiative recombination and its progressive worsening with time, especially in the mixed Sn–Pb low-bandgap layer, limit performance and stability. Here we find that mixed Sn–Pb perovskite thin films exhibit a compositional gradient, with an excess of Sn on the surface—and we show this gradient exacerbates oxidation and increases the recombination rate.

Aug 6, 2024 | nature.com | Fangyuan Jiang |Yangwei Shi |Tanka R. Rana |Daniel Morales |Isaac E Gould |Joel Smith | +6 more

AbstractAs perovskite photovoltaics stride towards commercialization, reverse bias degradation in shaded cells that must current match illuminated cells is a serious challenge. Previous research has emphasized the role of iodide and silver oxidation, and the role of hole tunnelling from the electron-transport layer into the perovskite to enable the flow of current under reverse bias in causing degradation.

Apr 16, 2024 | thelancet.com | Fangyuan Jiang |Jianhui Zhao |Jing Yi Sun |Wenxi Chen

SummaryThis study investigates the associations between air pollution and colorectal cancer (CRC) risk and survival from an epigenomic perspective. Using a newly developed Air Pollutants Exposure Score (APES), we utilized a prospective cohort study (UK Biobank) to investigate the associations of individual and combined air pollution exposures with CRC incidence and survival, followed by an up-to-date systematic review with meta-analysis to verify the associations.