Iodine-rich mixed composition perovskites optimised for tin(iv) oxide transport layers: the influence of halide ion ratio, annealing time, and ambient air aging on solar cell performance

Abstract

Mixed composition metal–halide perovskites were developed to improve the performance of perovskite solar cell devices incorporating tin(iv) oxide substrates for electron transport layers by optimizing the I/Br halide ion ratio.

Thiophene Cation Intercalation to Improve Band‐Edge Integrity in Reduced‐Dimensional Perovskites

“…Devices with ⟨ n ⟩≥5 showed improved performance together with good long‐term stability after 14 days of storage in air. The performance of the devices with ⟨ n ⟩ value ≥10 had a similar initial PCE (⟨ n ⟩=10) and even have a relative 10–20 % increase (⟨ n ⟩=20 and 40) after the 14 days under a low humidity, which may originate from the improved transport layer/perovskite interface during the aging process …”

“…10 had asimilar initial PCE (hni = 10) and even have ar elative 10-20 % increase (hni = 20 and 40) after the 14 days under al ow humidity,w hich may originate from the improved transport layer/perovskite interface during the aging process. [31][32][33] It is also important to note that the device performance is determined not only by the carrier transport at the interface between the ligand and inorganic layer but also by other factors such as crystallinity.T he 2-thiophenethtlamine (TEA)-based perovskite is confirmed to have asimilar crystal structure and electronic structures (such as ligand charge donation) to TMA-based perovskites (Supporting Informa- Angewandte Chemie Forschungsartikel tion, Figure S16 and Table S7). However,a ll TEA-based devices resulted in poor performance (PCE below 5%).…”

Thiophene Cation Intercalation to Improve Band‐Edge Integrity in Reduced‐Dimensional Perovskites

“…10 had asimilar initial PCE (hni = 10) and even have ar elative 10-20 % increase (hni = 20 and 40) after the 14 days under al ow humidity,w hich may originate from the improved transport layer/perovskite interface during the aging process. [31][32][33] It is also important to note that the device performance is determined not only by the carrier transport at the interface between the ligand and inorganic layer but also by other factors such as crystallinity.T he 2-thiophenethtlamine (TEA)-based perovskite is confirmed to have asimilar crystal structure and electronic structures (such as ligand charge donation) to TMA-based perovskites (Supporting Informa- Angewandte Chemie tion, Figure S16 and Table S7). However,a ll TEA-based devices resulted in poor performance (PCE below 5%).…”

Hole-Transporting Polymers Containing Partially Oxygen-Bridged Triphenylamine Units and Their Application for Perovskite Solar Cells

“…Device fabrication and photovoltaic properties P1-P4 were used as HTMs in regular-type, mesoporous PSCs. For comparison, reference devices with PTAA were also fabricated [41][42][43]. The device structure was FTO/compact TiO 2 (c-TiO 2 )/mesoporous TiO 2 (mp-TiO 2 )/CH 3 NH 3 PbI 3 / [HTM]/Au.…”