Slow-Photon-Effect-Induced Photoelectrical-Conversion Efficiency Enhancement for Carbon-Quantum-Dot-Sensitized Inorganic CsPbBr3 Inverse Opal Perovskite Solar Cells.

摘要: All-inorganic cesium lead halide perovskite is suggested as a promising candidate for solar cells due to its prominent thermal stability and comparable light absorption ability. Designing textured films rather than using planar-architectural perovskites can indeed optimize the optical photoelectrical conversion performance of photovoltaics. Herein, first time, this study demonstrates rational strategy fabricating carbon quantum dot (CQD-) sensitized all-inorganic CsPbBr3 inverse opal (IO) via template-assisted, spin-coating method. IO introduces slow-photon effect from tunable photonic band gaps, displaying novel response property visible naked eyes, while CQD inlaid among frameworks not only broadens range but also improves charge transfer process. Applied in cells, compared with planar CsPbBr3, greatly enhances utilization, effectively facilitates electron–hole extraction injection process, prolongs carrier lifetime, jointly contributing double-boosted power efficiency (PCE) 8.29% an increased incident photon-to-electron up 76.9%. The present on enhance PCE be extended rationally design other optoelectronic devices.