2021 Adv. Mater. (If 30.849): 3072 Hours Stable Perovskite with High Efficiency

　　Advanced Materials (IF 30.849) published a study in September 2021 to explore that 1D-3D mixed-dimensional perovskite materials could effectively suppress the electrostrictive effect and the imbalance of charge carriers to achieve ultra-long-term Stability and maintenance of high initial power conversion efficiency (PCE).

　　3D organic-inorganic hybrid halide perovskite solar cells (pero-SCs) face instability due to ion migration in operating conditions. In this study, the author used organic salts added with benzimidazole cation (Bn+) to develop a 1D-3D mixed-dimensional perovskite material. Bn+ can induce 3D perovskite crystal growth and form 1D BnPbI₃ perovskite.

　　The authors used solar simulator of Enlitech and corrected light intensity with standard battery of Enlitech. They also used Enlitech’s QE-R quantum efficiency measurement system to measure the spectral response. The research results showed that the ion migration of pin 1D–3D perovskite was inhibited. In addition to exhibiting ultra-long-term stability, it still maintained 95.3% of its initial power conversion efficiency (PCE) after 3072 hours of operation, while achieving no hysteresis perovskite.

　　In addition to the EQE (External Quantum Efficiency) spectrum analysis of solar cells, the Quantum Efficiency Measurement System of Enlitech also provides Jsc (short-circuit current density) comparison for the short-circuit current of solar cells under the solar simulator to prove the authenticity of the experiment. The solar simulator and KA-6000 software of Enlitech also provide monitoring of the short-circuit current over time to prove the stability of the solar cell!