Recombination resistance identification through current-voltage curve reconstruction in perovskite solar cells.

Perovskite solar cells (PSCs) have demonstrated remarkable advancements in efficiency and stability, yet fully understanding the dynamic processes governing their performance remains a challenge. Impedance spectroscopy (IS) offers a powerful means to characterize PSCs over a wide range of time scales, revealing insights into the internal electronic and ionic processes. However, critical factors like recombination, charge extraction, and transport resistance are often coupled in the same spectra response, affecting their accurate identification.

Adjusting the Crystallization of Tin Perovskites through Thiophene Additives for Improved Photovoltaic Stability.

Tin-based perovskites (Sn-PVK) are promising lead-free alternatives for efficient photovoltaic technology, but they face challenges related to bulk and surface defects due to suboptimal crystallization and Sn oxidation. Introducing thiophene-2-ethylammonium halides (TEAX, where X = I, Br, Cl) improves FASnI crystallization and reduces Sn formation. This is achieved by adjusting the crystallization dynamics through the formation of a complex between S and Sn during the preparation of the precursor solution, which also inhibits Sn oxidation in the resulting films.

Disease recurrence in patients undergoing mastectomy for ductal carcinoma in situ.

Purpose: With DCIS incidence on the rise, up to 30% of patients undergo mastectomy for Ductal carcinoma in situ (DCIS) (Nash and Hwang, in: Ann Surg Oncol 30(6):3206-3214, 2023). Local recurrence rates after mastectomy for DCIS are reportedly low, but risk factors for recurrence are not known (Kim et al., in: J Cancer Res Ther 16(6):1197-1202, 2020).