Revealing the chemical structure-dependent carrier trapping in one-dimensional antimony selenide photovoltaic materials

Abstract

Carriers/excitons trapping is detrimental for photovoltaic devices. Self-trapping has been observed in antimony trisulfide (Sb2S3) which is confirmed to reduce the theoretical energy conversion efficiency in wide band gap Sb2S3...

Mechanistic Study of the Transition from Antimony Oxide to Antimony Sulfide in the Hydrothermal Process to Obtain Highly Efficient Solar Cells

“…Additionally, one positive TA signal at around 530 nm representing the excited state absorption (ESA) and a negative TA signal at around 650 nm suggesting the PB signal. Owing to the short duration of the ESA process, the ESA process of the charges has a negligible influence on the TA analysis [12] . Therefore, the lifetime of the PB dominates the dynamics.…”

“…Owing to the short duration of the ESA process, the ESA process of the charges has a negligible influence on the TA analysis. [12] Therefore, the lifetime of the PB dominates the dynamics. Then, the decay characteristics at 650 nm are fitted by single exponential model to study carrier decay kinetics (Figure 3f and Table S2).…”

Electron Transport Layer Engineering Induced Carrier Dynamics Optimization for Efficient Cd‐Free Sb2Se3 Thin‐Film Solar Cells

“…Moreover, the obtained lifetime (𝜏 of 5818 ps) is also comparable to those values in high-efficiency Sb 2 Se 3 thin-film solar cells (Table S4, Supporting Information). [4,8,[46][47][48][49] Thus, the prolonged lifetime of photo-generated minority carriers ultimately contributes to an…”

Substrate-Dependent Ultrafast Charge-Carrier Dynamics: Unveiling the Annealing Effect on Optoelectronic Performance of Sb2Se3 Thin Films

“…Furthermore, Lian expanded the study and observed that Se-rich Sb 2 Se 3 has fewer defects, shallower energy levels, and higher efficiency when compared to Sb-rich samples. 31 Moreover, the photocarrier lifetime is a crucial parameter for predicting the carrier type in the material. It has been reported that Se-rich Sb 2 Se 3 films have exhibited a longer photocarrier lifetime which is attributed to the lower density of deep defects, leading to p-type conductivity.…”

“…Cao et al studied Sb-rich and Se-rich Sb 2 Se 3 films and discovered that the Sb-rich Sb 2 Se 3 film has decay constants of 24 and 4150 ps, whereas the Se-rich Sb 2 Se 3 film has decay constants of 38 and 4590 ps. Furthermore, Lian expanded the study and observed that Se-rich Sb 2 Se 3 has fewer defects, shallower energy levels, and higher efficiency when compared to Sb-rich samples . Moreover, the photocarrier lifetime is a crucial parameter for predicting the carrier type in the material.…”