AI Article Synopsis
- Multifunctional solar cells have been developed that can harvest light during the day and emit light at night, showcasing versatile applications.
- Researchers improved the performance of halide perovskite solar cells by refining the heterojunction interfaces, achieving stable and efficient operation.
- The enhanced design allows these devices to function effectively as both solar cells and ultra-low-voltage LEDs, potentially benefiting multifunctional harvesting-storage-utilization systems.
Article Abstract
Solar cells capable of light-harvesting during daytime and light-emission at night are multifunctional semiconductor devices with many potential applications. Here, it is reported that halide perovskite heterojunction interfaces can be refined to yield stable and efficient solar cells. The cell can also operate effectively as an ultralow-voltage light-emitting diode (LED) with a peak external quantum efficiency of electroluminescence (EQE ) of 3.3%. Spectroscopic and microscopic studies reveal that double-heterojunction refinement with wide-bandgap salts is key to densifying the packing of perovskite grains and enlarging the bandgaps of the perovskite surfaces that are in contact with charge-transport semiconductors. The refined perovskite enables a simple device with dual actions of solar cells and LEDs. This type of all-in-one device has the potential to be used in multifunctional harvesting-storage-utilization (HSU) systems.
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| http://dx.doi.org/10.1002/adma.202208178 | DOI Listing |
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