Low-Drift and High-Sensitivity Perovskite X-ray Detector through Proactive Healing of Bulk Ion Migration DOI
Pengxiang Wang, Hu Wang, Jie Fu

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Июнь 4, 2025

The radiation detection performances of perovskites have significantly outperformed those many traditional semiconductors. However, achieving high-quality perovskite detectors remains challenging due to bias-induced ion migration. primary concern is the lack recovery strategies promptly heal migrated ions during operation, realizing high device stability and exceptional optoelectronic performance. Herein, we proposed a proactive healing strategy by alternating current voltage (ACV) achieve low drift sensitivity. Under ACV, bulk migration can be effectively controlled maintain long-term devices. as-grown defects would annihilate ACV post-treatment, decreasing defect density improving crystal quality. Therefore, more stable balanced hole electron photoresponses are harvested after post-treatment. treated MAPbBr3 detector exhibits dark (∼10-6 nA cm-1 V-1 s-1) excellent sensitivity [5.43 × 104 (hole) 4.78 (electron) μC Gyair-1 cm-2]. This work not only demonstrates deep insight into but also provides an effective post-treatment operation for detectors.

Язык: Английский

Real Sensitivity of Spin-Coated Lead Halide Perovskite Lateral X-ray Detectors DOI

Chengyuan Xiao,

Francesco Maddalena,

Qinjie Wu

и другие.

ACS Applied Electronic Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 17, 2025

Язык: Английский

Процитировано

0
Interface Engineering with Polymer Interlayers: Achieving Uniform and Stable Perovskite Thick Films for X-ray Detection DOI
Ting Han, De Ning, Haiqing Qin

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 29, 2025

Interface stress is a critical challenge limiting the optoelectronic performance and stability of perovskite-based X-ray detectors, often causing severe issues such as surface roughness, cracking, film detachment during fabrication. To address this, polymer interlayers have been employed effective stress-buffering layers at substrate/perovskite interface. However, influence layer properties on growth quality perovskite films has received limited attention. In this study, we systematically explore processability, mechanical properties, solubility, thermal stability, adsorption strength with materials four polymers - poly(vinylidene fluoride) (PVDF), poly(vinylpyrrolidone) (PVP), polyimide (PI), poly(l-lactic acid) (PLLA) using combination experimental theoretical methods, emphasizing role molecular characteristics in enhancing CsPbI2Br quality. Among them, thick PI buffer demonstrates most uniform dense morphology, along strong adhesion to substrate, maintaining integrity even under 50 g load. The resulting detectors exhibit excellent uniformity long-term over 30 days continuous operation. Moreover, integration PI/CsPbI2Br 64 × thin-film transistor (TFT) enabled high-resolution imaging. This study provides valuable insights into selecting further optimize film-based detectors.

Язык: Английский

Процитировано

0
Low-Drift and High-Sensitivity Perovskite X-ray Detector through Proactive Healing of Bulk Ion Migration DOI
Pengxiang Wang, Hu Wang, Jie Fu

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Июнь 4, 2025

The radiation detection performances of perovskites have significantly outperformed those many traditional semiconductors. However, achieving high-quality perovskite detectors remains challenging due to bias-induced ion migration. primary concern is the lack recovery strategies promptly heal migrated ions during operation, realizing high device stability and exceptional optoelectronic performance. Herein, we proposed a proactive healing strategy by alternating current voltage (ACV) achieve low drift sensitivity. Under ACV, bulk migration can be effectively controlled maintain long-term devices. as-grown defects would annihilate ACV post-treatment, decreasing defect density improving crystal quality. Therefore, more stable balanced hole electron photoresponses are harvested after post-treatment. treated MAPbBr3 detector exhibits dark (∼10-6 nA cm-1 V-1 s-1) excellent sensitivity [5.43 × 104 (hole) 4.78 (electron) μC Gyair-1 cm-2]. This work not only demonstrates deep insight into but also provides an effective post-treatment operation for detectors.

Язык: Английский

Процитировано

0