Over 25% efficiency and stable bromine-free RbCsFAMA-based quadruple cation perovskite solar cells enabled by an aromatic zwitterion

Abstract

RbCsFAMA-based multi-cation perovskites with narrow bandgap and high lattice stability show great promise for achieving high performance perovskite solar cells (PSCs). Herein, an aromatic zwitterion of 1-(3-sulfopropyl)pyridinium hydroxide inner salt...

Synergistic transition metal ion co-doping and multiple functional additive passivation for realizing 25.30% efficiency perovskite solar cells

“…5a), along with V OC = 1.160 V, J SC = 25.80 mA cm À2 and FF = 84.51%, which is among the highest efficiencies for RbCsFAMA quadruple-cation PSCs to date (Table S1, ESI †). [46][47][48] The target device also demonstrated a very little hysteresis index (HI, HI = (PCE reverse À PCE forward )/PCE reverse ) of 2.8%, lower than that of the NT:SnO 2based device (HI = 3.5%) and the control device (HI = 3.6%) (Fig. S17, ESI †).…”

“…Combining the upgraded electron-selective layer and light-absorber, an impressive PCE of 25.30% along with a notable fill factor of 84.51% has been achieved, which is among the highest efficiencies for RbCsFAMA-based PSCs to date (Table S1, ESI†). 7,46–51 The unencapsulated devices also demonstrated excellent long-term operational stability. More than 88% and 90% of their original efficiencies were retained after 2600 h of storage under dark and 1200 h of continuous maximum output power point tracking (MPPT) under 1 sun illumination (white light LED arrays), respectively.…”

Synergy of 3D and 2D Perovskites for Durable, Efficient Solar Cells and Beyond

“…For example, many reports will measure photostability in inert atmosphere with the justification that it effectively simulates the atmosphere seen by an encapsulated device (e.g., ref ); other reports will directly measure the photostability of encapsulated cells in ambient air (e.g., ref ), and still others will measure the photostability at elevated temperatures (e.g., ref ). Likewise, different reports measure air stability in elevated (e.g., ref ), ambient (e.g., ref ), or reduced (e.g., ref ) humidity conditions, or measure shelf-stability in the dark in inert atmosphere (e.g., ref ). Elevated temperature tests have also been reported in air (e.g., ref ) or in N 2 (e.g., ref ).…”

Fabrication strategies for high quality halide perovskite films in solar cells

“…Wang et al introduced an aromatic zwitterion, 1-(3-sulfopropyl)pyridinium hydroxide inner salt (SPHI), into the perovskite precursor. 91 The sulfonic group could interact with the Pb 2+ and passivate the under-coordinated Pb 2+ defect. Also, the pyridine N + of SHPI could have the electrostatic interaction with the I − and compensate the FA vacancy.…”