Electronic Resource
Photo-generated Charge Trapping in Phase Segregated Halide Perovskites : A Comprehensive Approach towards Efficient Photo-Rechargeable Ion Capacitors
| العنوان: | Photo-generated Charge Trapping in Phase Segregated Halide Perovskites : A Comprehensive Approach towards Efficient Photo-Rechargeable Ion Capacitors |
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| المؤلفون: | Kumar, Tanuj, Kumar, Ankush, Beniwal, Shivang, Kumar, Ramesh, Bag, Monojit |
| بيانات النشر: | Uppsala universitet, Fysikalisk kemi Indian Inst Technol Roorkee, Adv Res Electrochem Impedance Spect Lab, Roorkee 247667, India. Indian Inst Technol Roorkee, Adv Res Electrochem Impedance Spect Lab, Roorkee 247667, India.;Nanyang Technol Univ Singapore, Sch Phys & Math Sci, 21 Nanyang link, Singapore City 637371, Singapore. Indian Inst Technol Roorkee, Adv Res Electrochem Impedance Spect Lab, Roorkee 247667, India. Indian Inst Technol Roorkee, Adv Res Electrochem Impedance Spect Lab, Roorkee 247667, India Indian Inst Technol Roorkee, Adv Res Electrochem Impedance Spect Lab, Roorkee 247667, India.;Indian Inst Technol Roorkee, Ctr Nanotechnol, Roorkee 247667, India. 2023 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The right balance between photo-absorption and electronic-ionic conductivity is needed for photo-rechargeable bifunctional devices for off-grid energy applications. Recently halide perovskites have been utilized for photo-rechargeable supercapacitors, but the mechanism of photo-capacitance enhancement is not known. Herein, we have fabricated mixed halide perovskites-based photo-rechargeable supercapacitors in two ways and examined the energy harvesting and storage capabilities of these devices. The porous electrode prepared from the mixed halide perovskites (CH3NH3PbBr2I) shows photo-capacitance enhancement up to 15 F/g, while the electrode prepared from the blend of CH3NH3PbBr3 and CH3NH3PbI3 (2 : 1 by molar ratio) shows the photo-capacitance diminution up to 12 F/g. Despite higher specific capacitance (~38 F/g in dark) in blend perovskites due to increased ion diffusion, the photo-generated charge trapping at nanoscale phase segregation is responsible for the diminution in photo-capacitance of these bifunctional devices, while a uniform mixing of halide ions in mixed halide perovskites nanocrystals leads to increased photo-capacitance. |
| مصطلحات الفهرس: | inter-diffusion of ions, phase segregation, photo-rechargeable, trapping, de-trapping, Condensed Matter Physics, Den kondenserade materiens fysik, Article in journal, info:eu-repo/semantics/article, text |
| DOI: | 10.1002.batt.202300213 |
| URL: | Batteries & Supercaps, 2023, 6:10 |
| الاتاحة: | Open access content. Open access content info:eu-repo/semantics/restrictedAccess |
| ملاحظة: | English |
| Other Numbers: | UPE oai:DiVA.org:uu-528549 0009-0007-4387-2852 0000-0002-7500-8694 0000-0002-4210-5455 doi:10.1002/batt.202300213 ISI:001033375300001 1457643538 |
| المصدر المساهم: | UPPSALA UNIV LIBR From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1457643538 |
| قاعدة البيانات: | OAIster |
| DOI: | 10.1002.batt.202300213 |
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