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Seok, Sang Il
Laboratory for Energy Harvesting Materials and Systems (LEHMS)
Research Interests
  • Solar energy conversion, perovskite solar cells, inorganic-organic hybrid materials and processing, solution chemistry


Enhancement of Piezoelectricity in Dimensionally Engineered Metal-Halide Perovskites Induced by Deep Level Defects

DC Field Value Language Heo, Sung ko Lee, Do Yoon ko Lee, Dongwook ko Lee, Yonghui ko Kim, Kihong ko Yun, Hyun-Sung ko Paik, Min Jae ko Shin, Tae Joo ko Oh, Hyeon Seung ko Shin, Taeho ko Kim, Jaekyung ko Kim, Seong Heon ko Seok, Sang Il ko Nazeeruddin, MohammadKhaja ko 2022-05-06T00:23:18Z - 2022-04-29 ko 2022-05 ko
dc.identifier.citation ADVANCED ENERGY MATERIALS, v.12, no.19, pp.2200181 ko
dc.identifier.issn 1614-6832 ko
dc.identifier.uri -
dc.description.abstract Metal halide perovskite solar cells (PSCs) have been considered to be one of the most promising next-generation energy harvesters over the past decades due to remarkably rapid improvement of power conversion efficiency in photovoltaics. However, energy harvesters based on the solar energy source have an intrinsic environment limitation for indoor applications. A feasible solution to the limitation is to add non-solar energy harvesting functions to the solar energy harvesters. Here, the piezoelectric properties of two types of metal halide PSCs are investigated, the 3D only and the 3D/2D structure, showing PCEs of 21.3% and 23.2%, respectively. Piezo-response force microscopy and synchrotron-based X-ray diffraction demonstrate that both types of PSC sample have piezoelectricity. Remarkably, the 3D/2D structure has considerably higher piezoelectric amplitude than the 3D-only. The deep level transient spectroscopy results reveal that the enhancement in the piezoelectricity of the 3D/2D structure originates from Pb-Br defects. This study unravels the role of defects in the piezoelectricity of metal halide PSCs and provides a direction to develop the multi-function energy harvesters based on the PSCs. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Enhancement of Piezoelectricity in Dimensionally Engineered Metal-Halide Perovskites Induced by Deep Level Defects ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85127583150 ko
dc.identifier.wosid 000779282400001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/aenm.202200181 ko
dc.identifier.url ko
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