Journal Article perovskite solar cells all-perovskite tandem solar cells defect passivation Research Support, Non-U.S. Gov't X-ray scintillation band structure engineering carrier lifetime carrier management circularly polarized LEDs density function theory calculations doping electron transfer helical polymers hole transport layer-free infrared-blind materials long‐term stability low noise low-bandgap perovskites low-bandgap tin-lead magnetic circularly polarized luminescence manganese halides organohalide perovskites photodiodes surface reconstruction taurine trap density