Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy
Summary: Metal halide perovskite (MHP) solar cells are promising aerospace power sources given their potential as inexpensive, lightweight, and resilient solar electricity generators. Herein, the intrinsic radiation tolerance of unencapsulated methylammonium lead iodide/chloride (CH3NH3PbI3-xClx) fi...
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Elsevier
2025-01-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S258900422402813X |
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| author | Samuel Erickson Calista Lum Katie Stephens Mritunjaya Parashar Darshpreet Kaur Saini Bibhudutta Rout Cheol Park Timothy J. Peshek Lyndsey McMillon-Brown Sayantani Ghosh |
| author_facet | Samuel Erickson Calista Lum Katie Stephens Mritunjaya Parashar Darshpreet Kaur Saini Bibhudutta Rout Cheol Park Timothy J. Peshek Lyndsey McMillon-Brown Sayantani Ghosh |
| author_sort | Samuel Erickson |
| collection | DOAJ |
| description | Summary: Metal halide perovskite (MHP) solar cells are promising aerospace power sources given their potential as inexpensive, lightweight, and resilient solar electricity generators. Herein, the intrinsic radiation tolerance of unencapsulated methylammonium lead iodide/chloride (CH3NH3PbI3-xClx) films was isolated. Spatially resolved photoluminescence (PL) spectroscopy and confocal microscopy revealed the fundamental defect physics through optical changes as films were irradiated with 4.5 MeV neutrons and 20 keV protons at fluences between 5×1010 and 1×1016 p+/cm2. As proton radiation increased beyond 1×1013 p+/cm2, defects formed in the film, causing both a decrease in photoluminescence intensity and a 30% increase in surface darkening. All proton irradiated films additionally exhibited continuous increase of energy bandgaps and decreasing charge recombination lifetimes with increasing proton fluences. These optical changes in the absorber layer precede performance declines detectable in standard current-voltage measurements of complete solar cell devices and therefore have the potential of serving as early indicators of radiation tolerance. |
| format | Article |
| id | doaj-art-a8a4561212f64b95be2afa77700f7c00 |
| institution | DOAJ |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-a8a4561212f64b95be2afa77700f7c002025-08-20T02:39:48ZengElsevieriScience2589-00422025-01-0128111158610.1016/j.isci.2024.111586Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopySamuel Erickson0Calista Lum1Katie Stephens2Mritunjaya Parashar3Darshpreet Kaur Saini4Bibhudutta Rout5Cheol Park6Timothy J. Peshek7Lyndsey McMillon-Brown8Sayantani Ghosh9Department of Physics, University of California, Merced, Merced, CA, USADepartment of Physics, University of California, Merced, Merced, CA, USAMaterials and Biomaterials Science and Engineering, University of California, Merced, Merced, CA, USADepartment of Physics, University of North Texas, Denton, TX, USADepartment of Physics, University of North Texas, Denton, TX, USADepartment of Physics, University of North Texas, Denton, TX, USAAdvanced Materials and Processing Branch, NASA Langley Research Center, Hampton, VA 23681, USAPhotovoltaic and Electrochemical Systems Branch, John H. Glenn Research Center, National Aeronautics and Space Administration, Cleveland, OH, USAPhotovoltaic and Electrochemical Systems Branch, John H. Glenn Research Center, National Aeronautics and Space Administration, Cleveland, OH, USADepartment of Physics, University of California, Merced, Merced, CA, USA; Corresponding authorSummary: Metal halide perovskite (MHP) solar cells are promising aerospace power sources given their potential as inexpensive, lightweight, and resilient solar electricity generators. Herein, the intrinsic radiation tolerance of unencapsulated methylammonium lead iodide/chloride (CH3NH3PbI3-xClx) films was isolated. Spatially resolved photoluminescence (PL) spectroscopy and confocal microscopy revealed the fundamental defect physics through optical changes as films were irradiated with 4.5 MeV neutrons and 20 keV protons at fluences between 5×1010 and 1×1016 p+/cm2. As proton radiation increased beyond 1×1013 p+/cm2, defects formed in the film, causing both a decrease in photoluminescence intensity and a 30% increase in surface darkening. All proton irradiated films additionally exhibited continuous increase of energy bandgaps and decreasing charge recombination lifetimes with increasing proton fluences. These optical changes in the absorber layer precede performance declines detectable in standard current-voltage measurements of complete solar cell devices and therefore have the potential of serving as early indicators of radiation tolerance.http://www.sciencedirect.com/science/article/pii/S258900422402813XPhysicsMaterials scienceEnergy materials |
| spellingShingle | Samuel Erickson Calista Lum Katie Stephens Mritunjaya Parashar Darshpreet Kaur Saini Bibhudutta Rout Cheol Park Timothy J. Peshek Lyndsey McMillon-Brown Sayantani Ghosh Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy iScience Physics Materials science Energy materials |
| title | Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy |
| title_full | Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy |
| title_fullStr | Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy |
| title_full_unstemmed | Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy |
| title_short | Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy |
| title_sort | elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy |
| topic | Physics Materials science Energy materials |
| url | http://www.sciencedirect.com/science/article/pii/S258900422402813X |
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