X-ray detection limit and sensitivity are important figure of merits for perovskite X-ray detectors, but literatures lack a valid mathematic expression for determining the lower limit of detection for a perovskite X-ray detector. In this work, we present a thorough analysis and new method for X-ray detection limit determination based on a statistical model that correlates the dark current and the X-ray induced photocurrent with the detection limit. The detection limit can be calculated through the measurement of dark current and sensitivity with an easy-to-follow practice. Alternatively, the detection limit may also be obtained by the measurement of dark current and photocurrent when repeatedly lowering the X-ray dose rate. While the material quality is critical, we show that the device architecture and working mode also have a significant influence on the sensitivity and the detection limit. Our work establishes a fair comparison metrics for material and detector development.
Keyphrases
- high resolution
- loop mediated isothermal amplification
- dual energy
- real time pcr
- label free
- healthcare
- magnetic resonance imaging
- computed tomography
- poor prognosis
- oxidative stress
- electron microscopy
- magnetic resonance
- long non coding rna
- mass spectrometry
- quality improvement
- binding protein
- solid phase extraction
- high glucose
- solar cells
- tandem mass spectrometry
- simultaneous determination