Publications de Shi Chen | EPFL Graph Search

Projected resurgence of COVID-19 in the United States in July-December 2021 resulting from the increased transmissibility of the Delta variant and faltering vaccination

In Spring 2021, the highly transmissible SARS-CoV-2 Delta variant began to cause increases in cases, hospitalizations, and deaths in parts of the United States. At the time, with slowed vaccination uptake, this novel variant was expected to increase the ri ...

eLIFE SCIENCES PUBL LTD2022

Vertically Aligned 2D/3D Pb-Sn Perovskites with Enhanced Charge Extraction and Suppressed Phase Segregation for Efficient Printable Solar Cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Fei Guo, Xuehui Liu, Chaohui Li, Shi Chen

The concept of mixed 2D/3D heterostructures has emerged as an effective method for improving the stability of lead halide perovskite solar cells, which has been, however, rarely reported in lead-tin (Pb-Sn) mixed perovskite devices. Here, we report a scala ...

2020

Ligand-free nano-grain Cu2SnS3 as a potential cathode alternative for both cobalt and iodine redox electrolyte dye-sensitized solar cells

Mohammad Khaja Nazeeruddin, Feng Liu, Xu Pan, Shi Chen, Jian Wen

Tetragonal phase Cu2SnS3 (CTS) in the form of nano-grain thin film serves as an efficient inexpensive electrocatalyst alternative to the commonly used Pt in dye-sensitized solar cells (DSSCs) exhibiting remarkable electrochemical stability and electrocatal ...

Royal Society of Chemistry2016

Lead-Free MA(2)CuCl(x)Br(4-x), Hybrid Perovskites

Michael Graetzel, Nripan Mathews, Shi Chen

Despite their extremely good performance in solar cells with efficiencies approaching 20% and the emerging application for light-emitting devices, organic-inorganic lead halide perovskites suffer from high content of toxic, polluting, and bioaccumulative P ...

American Chemical Society2016