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Background
Deep learning models require large‐scale training to perform confidently, but obtaining annotated datasets in medical imaging is challenging. Weak annotation has emerged as a way to save time and effort.
Purpose
To develop a deep learning model for 3D breast cancer segmentation in dynamic contrast‐enhanced magnetic resonance imaging (DCE‐MRI) using weak annotation with reliable performance...
Perovskite Solar Cells
In article number 2302418, Hyungjun Kim, Ki‐Ha Hong, Sang Hyuk Im, Chang Eun Song, and co‐workers demonstrate a defect‐passivation strategy using L‐asparagine, which can effectively suppress tin oxidation. L‐asparagine as a zwitterion revolutionizes film morphology and energy‐level matching, boosting power conversion efficiency to a remarkable 13.31%. Surpassing limitations...
Despite the optoelectronic similarities between tin and lead halide perovskites, the performance of tin‐based perovskite solar cells remains far behind, with the highest reported efficiency to date being ≈14%. This is highly correlated to the instability of tin halide perovskite, as well as the rapid crystallization behavior in perovskite film formation. In this work, l‐Asparagine as a zwitterion...