TY - JOUR
T1 - Highly resistive lead-free perovskite ferroelectric enables self-driven X-ray detection with ultralow dose
AU - Yang, Huawei
AU - Wu, Jianbo
AU - Zhu, Zeng-Kui
AU - Li, Hang
AU - Yu, Panpan
AU - Zeng, Ying
AU - Ding, Qingran
AU - Chen, Guirong
AU - Xu, Lijun
AU - Han, Zhangtong
AU - Zhong, Haiqing
AU - Wang, Yueying
AU - Wu, Wenhui
AU - Luo, Junhua
PY - 2024/11/27
Y1 - 2024/11/27
N2 - ABSTRACT Lead-free perovskite has become a shining pearl in the field of direct X-ray detection due to its non-toxicity and excellent optoelectronic properties. However, the high limit of detection (LoD) of X-ray detectors due to high current noise caused by high operating voltages is a major challenge to overcome. Here, we utilized a zero-dimensional lead-free perovskite ferroelectric material (NMP)3Sb2Br9 (1, NMP = N-methylpyrrolidine) to achieve ultra-low LoD self-driven X-ray detection. The self-driven detection mode without external bias has been proven to be an effective means of reducing LoD due to its low current noise characteristics. Additionally, the zero-dimensional distinctive isolated framework results in a high resistivity of 1.39 × 1011 W cm, which effectively reduces the current noise and suppresses ion migration. By further combining the ferroelectric-induced bulk photovoltaic effect, the 1-based detector achieves an ultra-low LoD X-ray detection of 84.1 nGyair/s under the self-driven mode, which represents a quite advanced level in the lead-free perovskite X-ray detection region. Our work successfully achieved ultra-low LoD self-driven X-ray detection by combining ferroelectricity with high resistance, providing a promising avenue for the development of low LoD X-ray detectors. © 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
AB - ABSTRACT Lead-free perovskite has become a shining pearl in the field of direct X-ray detection due to its non-toxicity and excellent optoelectronic properties. However, the high limit of detection (LoD) of X-ray detectors due to high current noise caused by high operating voltages is a major challenge to overcome. Here, we utilized a zero-dimensional lead-free perovskite ferroelectric material (NMP)3Sb2Br9 (1, NMP = N-methylpyrrolidine) to achieve ultra-low LoD self-driven X-ray detection. The self-driven detection mode without external bias has been proven to be an effective means of reducing LoD due to its low current noise characteristics. Additionally, the zero-dimensional distinctive isolated framework results in a high resistivity of 1.39 × 1011 W cm, which effectively reduces the current noise and suppresses ion migration. By further combining the ferroelectric-induced bulk photovoltaic effect, the 1-based detector achieves an ultra-low LoD X-ray detection of 84.1 nGyair/s under the self-driven mode, which represents a quite advanced level in the lead-free perovskite X-ray detection region. Our work successfully achieved ultra-low LoD self-driven X-ray detection by combining ferroelectricity with high resistance, providing a promising avenue for the development of low LoD X-ray detectors. © 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
KW - Zero-dimensional perovskite
KW - Lead-free
KW - Ferroelectric
KW - Self-driven X-ray detection
KW - Low limit of detection
U2 - 10.1016/j.cclet.2024.110682
DO - 10.1016/j.cclet.2024.110682
M3 - RGC 21 - Publication in refereed journal
SN - 1001-8417
JO - Chinese Chemical Letters
JF - Chinese Chemical Letters
ER -