Proton-transfer-induced 3D/2D hybrid perovskites suppress ion migration and reduce luminance overshoot
| العنوان: | Proton-transfer-induced 3D/2D hybrid perovskites suppress ion migration and reduce luminance overshoot |
|---|---|
| المؤلفون: | Richard H. Friend, Joo Sung Kim, Aditya Sadhanala, Young-Hoon Kim, Tae-Woo Lee, Su Hun Jeong, Nam-Gyu Park, Hobeom Kim, Satyawan Nagane, In-Hyeok Park, Emad Oveisi, Hoichang Yang, Jung-Min Heo, Jinwoo Park, Kian Ping Loh, Min-Ho Park, Jin Jung Kweon, Hyun M. Jang, Mingyuan Pei, Hyung-Joong Yun, Sung Keun Lee, Zhun Liu, Lijun Zhang, Mohammad Khaja Nazeeruddin |
| المساهمون: | Kim, Hobeom [0000-0002-5296-8975], Kim, Joo Sung [0000-0002-7465-3085], Heo, Jung-Min [0000-0002-6094-210X], Park, In-Hyeok [0000-0003-1371-6641], Park, Jin-Woo [0000-0002-8544-1643], Oveisi, Emad [0000-0001-7483-7880], Zhang, Lijun [0000-0002-6438-5486], Lee, Sung Keun [0000-0002-3149-3421], Jang, Hyun Myung [0000-0002-1889-9515], Friend, Richard H. [0000-0001-6565-6308], Loh, Kian Ping [0000-0002-1491-743X], Nazeeruddin, Mohammad Khaja [0000-0001-5955-4786], Park, Nam-Gyu [0000-0003-2368-6300], Lee, Tae-Woo [0000-0002-6449-6725], Apollo - University of Cambridge Repository, Friend, Richard H [0000-0001-6565-6308] |
| المصدر: | Nature Communications, Vol 11, Iss 1, Pp 1-13 (2020) Nature Communications |
| بيانات النشر: | Nature Publishing Group UK, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 147/135, 120, 147/137, General Physics and Astronomy, 02 engineering and technology, 01 natural sciences, Luminance, law.invention, law, Lattice (order), 128, Crystallization, lcsh:Science, Multidisciplinary, 639/301, 34 Chemical Sciences, Physics, light-emitting-diodes, 639/624, article, 021001 nanoscience & nanotechnology, Chemistry, solar-cells, 3406 Physical Chemistry, 140/131, Optoelectronics, 0210 nano-technology, Light-emitting diode, 145, Science, 010402 general chemistry, General Biochemistry, Genetics and Molecular Biology, 140/125, Diode, Perovskite (structure), business.industry, 639/766, halide perovskite, General Chemistry, Materials science, 0104 chemical sciences, Optics and photonics, hysteresis, efficiency, lcsh:Q, Crystallite, 639/638, 119, business, Luminous efficacy |
| الوصف: | Perovskite light-emitting diodes (PeLEDs) based on three-dimensional (3D) polycrystalline perovskites suffer from ion migration, which causes overshoot of luminance over time during operation and reduces its operational lifetime. Here, we demonstrate 3D/2D hybrid PeLEDs with extremely reduced luminance overshoot and 21 times longer operational lifetime than 3D PeLEDs. The luminance overshoot ratio of 3D/2D hybrid PeLED is only 7.4% which is greatly lower than that of 3D PeLED (150.4%). The 3D/2D hybrid perovskite is obtained by adding a small amount of neutral benzylamine to methylammonium lead bromide, which induces a proton transfer from methylammonium to benzylamine and enables crystallization of 2D perovskite without destroying the 3D phase. Benzylammonium in the perovskite lattice suppresses formation of deep-trap states and ion migration, thereby enhances both operating stability and luminous efficiency based on its retardation effect in reorientation. Ion migration can induce overshoot of luminance in normal 3D perovskite light-emitting diode devices and results in reduced lifetime. Here Kim et al. show that the ion migration and overshoot can be suppressed in 3D/2D hybrid perovskites, leading to 21 times longer operational lifetime. |
| وصف الملف: | application/pdf; text/xml |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd36a1fadebd2429b37d4b2e731e0f46 https://www.repository.cam.ac.uk/handle/1810/307631 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....dd36a1fadebd2429b37d4b2e731e0f46 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |