MAPbI3 single crystal derived precursor ink for stable and efficient perovskite solar cells
Source abstract
Abstract
MAPbI 3 perovskite absorber ink is obtained by vapor mediated approach from MAPbI 3 single crystals by exposing it to methylamine vapor for application in perovskite solar cells (PSC). This single crystal-derived ink shows a significant blue shift in the steady state photoluminescence emission due to MAPbI 3 lattice slicing. Absorber films coated by spin coating process using single crystal derived MAPbI 3 ink show better charge extraction, carrier lifetime, and device performance than the conventional powder derived film. Power conversion efficiency (PCE) of 16.7% is recorded for single crystal derived PSC compared to 12% of the conventional powder derived PSC demonstrating superior film quality. Highly crystalline films with lower traps and uniform absorbance in the entire visible region resulted in enhanced J SC (23.7 mA/cm 2 ). A high fill factor (70%) is achieved due to the dense, pinhole free films with long columnar grains resulting in low series and high shunt resistance. Single crystal derived PSCs were stable with 85% (70%) PCE retention for up to 2850 h (∼3500 h) when the devices were kept in ambient (25 ± 3 °C and 50 ± 10% RH); the highest reported so far. Tests under similar conditions using conventional powder derived devices degraded within 700 h with less than 50% PCE retention. The MAPbI 3 absorber layer coated using single crystal derived ink exhibits superior photovoltaic performance and stability over the conventional MAPbI 3 film derived from powder precursors.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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