Efficiency improvement for perovskite-inspired Cs₃Sb₂I₉ solar cells using P3HT as the hole transport material

Abstract

In this work, we introduce P3HT (poly(3-hexylthiophene-2,5-diyl)) as an efficient hole transport material (HTM) for lead-free Cs3Sb2I9 perovskite-inspired solar cells.

Perovskite-inspired Cu2AgBiI6 for mesoscopic indoor photovoltaics under realistic low-light intensity conditions

“…A 70 nm thick c-TiO 2 layer was deposited on the UV-ozone-treated (for 10 min) FTO substrates by spray pyrolysis of titanium di-isopropoxide bis(acetylacetonate) solution (0.38 M) at 450 °C. 14 The films were sintered in air at 450 °C for 1 h and were then allowed to cool down to room temperature. The mesoporous TiO 2 (mp-TiO 2 ) layers of varying thicknesses were fabricated by spin-coating (4000 rpm per 10 s) varying concentrations of the 30NRD TiO 2 nanoparticle paste/ethanol solution.…”

Enhancing the Microstructure of Perovskite‐Inspired Cu‐Ag‐Bi‐I Absorber for Efficient Indoor Photovoltaics

“…This stability trend is similar to that of the recently reported CABI solar cells and other lead-free PIMs such as Cs 3 Sb 2 I 9 . [11,18] Future studies may focus on: i) improving the stability of CABI devices under different testing conditions; and/or ii) investigating the effect of the impurity phase present in CABI on the device stability. In addition to the shelflife stability, we monitored the efficiency of the unencapsulated CABI+HI device in air (RH ≈ 50%) at the maximum power point (MPP) under continuous 1 sun illumination.…”

“…[6][7][8] Stable PIM compositions for solar cell applications are mainly based on bismuth (Bi) and antimony (Sb), which are less toxic than lead. [8][9][10][11][12] Importantly, many such PIMs have bandgaps ≈2.0 eV, which enables them to efficiently absorb artificial indoor light, resulting in maximum theoretical iPCEs in the range of 50-60%. [1,8,13] To date, only two PIMs, namely Cs 3 Sb 2 Cl x I 9−x (bandgap = 1.95 eV) and AgBiI 4 (bandgap = 1.8 eV), have been explored for IPVs, leading to iPCEs (≈5%) already in the same range of commercial a-Si-H devices.…”

Fine‐Tuning Single‐Source White‐Light Emission from All‐Inorganic Corrugated 2D Antimony‐Halide Perovskite

“…Recently, 2D ALFPs such as A 3 B 2 X 9 (A = Cs, Rb; B = Sb, Bi; X = Cl, Br, I), due to their excellent photoelectric properties and excellent humidity stability, [ 12 ] have been successfully applied in optoelectronic devices. [ 13 ] This is the fact that as the adjacent elements to Pb 2+ cation on the periodic table, Bi 3+ and Sb 3+ cations had a comparable contribution to the CBM and VBM like Pb 2+ cation.…”