Sensing Application — Semiconductive Coordination Polymer with Multi-Channel Charge Transfer for High-Performance Direct X-ray Detection

Measurement evidence

Sensing Application

Semiconductive Coordination Polymer with Multi-Channel Charge Transfer for High-Performance Direct X-ray Detection · Yu X.-Q., Sun L.-B., Li Q.-Y. et al. · Angewandte Chemie - International Edition · 2025 · e202419266

4 measurement groups · 12 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

Bias-dependent photocurrent fitted by Hecht equation

Ag/1/Ag pellet detector device · Pellet

Ag/sample/Ag pellet device under X-ray irradiation; bias-dependent photocurrent before and after three months exposure.

Geometry
Ag/1/Ag pellet detector
Context
pristine compound 1 pellet
Measurement source
5 · Results and Discussion · Figure 3f
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
carrier mobility-lifetime productMarked as a best value within this paper8.05 x 10^-3 cm2 V^-1Text
Exact Reported
5 · Results and Discussion · Figure 3f; Table S6

Low-dose X-ray response and signal-to-noise ratio

Ag/1/Ag pellet detector device · Pellet

Low dose-rate response repeated three times; LoD assessed against SNR >= 3; bias 35 V.

Geometry
Ag/1/Ag pellet detector
Context
pristine compound 1 pellet
Measurement source
7 · Results and Discussion · Figure 4c; Table S6
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
detectable X-ray dose rate / detection limitMarked as a best value within this paper128 nGyair s^-1 (0.128 μGy s^-1) at 35 V128 nGyair s-1Text
Exact Reported
7 · Results and Discussion · Figure 4c-d; Table S6
medical imaging detection-limit benchmark5.5 μGyair s^-1Text
Exact Reported
7 · Results and Discussion
signal-to-noise ratio at 128 nGyair s-127.19 at 35 V and 128 nGyair s^-1Text
Exact Reported
7 · Results and Discussion · Figure 4c

X-ray on/off cycling and long-duration drift tests

Ag/1/Ag pellet detector device · Pellet

100 cycles at 19.2 uGyair s-1 and 35 V; extended exposure >2000 s at same dose rate.

Geometry
Ag/1/Ag pellet detector
Context
pristine compound 1 pellet
Measurement source
7 · Results and Discussion · Figure 4f-g; Figure S13
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
X-ray switching cycle count at 35 V100 cycles at 19.2 μGyair s^-1Text
Exact Reported
7 · Results and Discussion · Figure 4f-g
dark-current drift~2.39 x 10^-4 pA/s2.39e-16 A s-1~Figure Axis
Approximate
S13 · Supplementary Figures · Figure S13
long-duration X-ray drift-test time>2000 s at 19.2 μGyair s^-1>Text
Range
7 · Results and Discussion · Figure S13
photocurrent signal drift~9.41 x 10^-4 pA/s9.41e-16 A s-1~Figure Axis
Approximate
S13 · Supplementary Figures · Figure S13

Photocurrent response/current-density versus X-ray dose rate

Ag/1/Ag pellet detector device · Pellet

50 kVp X-ray tube; dose rate controlled by 2-160 uA tube current; dose rates 2.4-16.8 uGyair s-1 for main sensitivity plots; biases 5, 20, and 35 V.

Atmosphere
vacuum shielded chamber, approximately 2 Pa
Geometry
Ag/1/Ag pellet detector
Context
pristine compound 1 pellet
Measurement source
S4 · 1.4 X-ray detection measurements · Figure 4b; Figure S11
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
effective atomic number Zeff39.26Text
Exact Reported
5 · Results and Discussion · Figure S7
X-ray sensitivity at 20 V80 μC Gyair^-1 cm^-2 at 20 VFigure Axis
Rounded Reported
6 · Results and Discussion · Figure 4b
X-ray sensitivity at 35 VMarked as a best value within this paper172 μC Gyair^-1 cm^-2 at 35 VText
Exact Reported
2 · Results and Discussion · Figure 4b; Table S6
X-ray sensitivity at 5 V54 μC Gyair^-1 cm^-2 at 5 VText
Rounded Reported
6 · Results and Discussion · Figure 4b; Figure S11