Influence of Lithium and Lanthanum Treatment on TiO₂ Nanofibers and Their Application in n‐i‐p Solar Cells

Abstract

Invited for this month's cover picture is the group of Dr. Macdonald from the Department of Chemistry at University College London (UK). The cover picture shows a scanning electron microscopy image of lanthanum‐treated TiO2 nanofibers rendered to show a three‐dimensional representation of the nanostructured solar cell. This work shows that the addition of lithium and lanthanum cations causes minimal substitutional or interstitial doping of TiO2 nanofibers. In a solar cell, photovoltaic characteristics reveal that lanthanum treatment is beneficial, whereas lithium treatment is found to be detrimental to the device performance for both dye‐sensitized and perovskite solar cells. Read the full text of the Article at 10.1002/celc.201900532.

TiO2 Nanotubes: An Advanced Electron Transport Material for Enhancing the Efficiency and Stability of Perovskite Solar Cells

“…Herein, the surface area of nanotubes was calculated through the BET technique, which was found to be 78 m 2 /g compared to 27.6 m 2 /g for TD-NPs as reported earlier. 52,53 The hysteresis loops observed at high relative pressure show the inner cavities of the tubes, as shown in Figure 1b (inset). The experiential hysteresis loops found at high relative pressure reveal the mesoporous feature of the obtained TD-NTs.…”