Abstract
We numerically demonstrate enhanced light harvesting efficiency in both CH3NH3PbI3 and CH(NH2)2PbI3-based perovskite solar cells using inverted vertical-cone photonic-crystal nanostructures. For CH3NH3PbI3 perovskite solar cells, the maximum achievable photocurrent density (MAPD) reaches 25.1 mA/cm2, corresponding to 92% of the total available photocurrent in the absorption range of 300 nm to 800 nm. Our cell shows 6% absorption enhancement compared to the Lambertian limit (23.7 mA/cm2) and has a projected power conversion efficiency of 12.9%. Excellent solar absorption is numerically demonstrated over a broad angular range from 0 to 60 degree for both S- and P- polarizations. For the corresponding CH(NH2)2PbI3 based perovskite solar cell, with absorption range of 300 nm to 850 nm, we find a MAPD of 29.1 mA/cm2, corresponding to 95.4% of the total available photocurrent. The projected power conversion efficiency of the CH(NH2)2PbI3 based photonic crystal solar cell is 23.4%, well above the current world record efficiency of 20.1%.
Highlights
Metal halide perovskites have been intensively studied in solar cell applications since the first perovskite solar cell was reported.[1]
For the corresponding CH(NH2)2PbI3 based perovskite solar cell, with absorption range of 300 nm to 850 nm, we find a maximum achievable photocurrent density (MAPD) of 29.1 mA/cm[2], corresponding to 95.4% of the total available photocurrent
For planar perovskite solar cells, the optical properties have been well studied[14] and attempts to improve the solar absorption in the perovskite active layer have focused on tandem solar cell structures.[15,16]
Summary
Metal halide perovskites have been intensively studied in solar cell applications since the first perovskite solar cell was reported.[1] The excellent optical and electrical properties of perovskites make them among the most promising generation solar cells Both mesostructured and planar perovskite architectures have been proposed and their power conversion efficiency (PCE) has improved very rapidly in recent years.[2,3,4,5,6,7,8,9,10,11,12] There are currently two distinct perovskite family materials, CH3NH3PbI3 and CH(NH2)2PbI3, used in solar cell research. We identify an inverted-vertical-cone photonic crystal with MAPD of 25.1 mA/cm[2] This is 92% of the total available photocurrent and exceeds the Lambertian limit (23.7 mA/cm2)[19] for an equivalent thickness of 180 nm. We identify a photonic crystal architecture that yields 29.1 mA/cm[2], corresponding to 95.4% of the total available sunlight
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
