Electrical Transport — Multilevel Chiral Semiconductor Metal-Peptide Framework Thin Film for Highly Circularly Polarized Visible Photodetection

6 measurement groups · 23 results

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

Circularly polarised visible photodetection

CAS-4 thin film-based Au photodetector · Electrode

UV-Vis detector photoelectric testing system with Keithley 2636b; LCP/RCP generated with LBTEK LCP25-VIS-M and RCP25-VIS-M plates; 10 V bias; 600 nm and wavelength-dependent tests.

Temperature: room temperature
Geometry: Au/CAS-4/Au metal-semiconductor-metal photodetector; effective irradiation area 8.1 mm2.
Context: CAS-4 active thin film in Au-electroded device.
Measurement source: SI p.7 · Photoelectric measurement · Figures 4 and S20-S21

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CNN recognition rate for LCP/RCP images	0.99 after approximately 30 training epochs	99 %	—	Text Approximate	main p.7, article p.26680 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure 5e
Maximum detectivity under LCPMarked as a best value within this paper	1.58 x 10^11 Jones	—	—	Text Rounded Reported	main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure 4h
Maximum detectivity under RCP	8.48 x 10^10 Jones	—	—	Text Rounded Reported	main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure 4h
Maximum EQE under LCPMarked as a best value within this paper	186%	—	—	Text Rounded Reported	main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure S20b
Maximum EQE under RCP	98%	—	—	Text Rounded Reported	main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure S20b
Maximum photocurrent anisotropy factor gIphMarked as a best value within this paper	0.51 at 10 V	—	—	Text Rounded Reported	main p.5, article p.26678 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure 4e
Peak responsivity under 600 nm LCPMarked as a best value within this paper	0.90 A/W	—	—	Text Rounded Reported	main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure S20a; Figure 4b
Peak responsivity under 600 nm RCP	0.52 A/W	—	—	Text Rounded Reported	main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure S20a; Figure 4b
Photocurrent used in chiral MOF comparison table	1.25 uA	—	—	SI Table Rounded Reported	SI Table S3 in text layer after Figure S41 · Table S3 · Table S3
gIph for 10-cycle film	approximately 0.35	—	bar shown; roughly +/-0.02	Visual Estimate Approximate	SI p.28 · Results and Discussions · Figure S27
gIph for 15-cycle film	approximately 0.43	—	bar shown; roughly +/-0.02	Visual Estimate Approximate	SI p.28 · Results and Discussions · Figure S27
gIph for 20-cycle filmMarked as a best value within this paper	approximately 0.51	—	bar shown; roughly +/-0.02	Visual Estimate Approximate	SI p.28 · Results and Discussions · Figure S27
gIph for 25-cycle film	approximately 0.48	—	bar shown; roughly +/-0.02	Visual Estimate Approximate	SI p.28 · Results and Discussions · Figure S27
gIph for 5-cycle film	approximately 0.29	—	bar shown; roughly +/-0.02	Visual Estimate Approximate	SI p.28 · Results and Discussions · Figure S27

Dark current-voltage measurement

Electrical conductivity

CAS-4 thin film-based Au photodetector · Electrode

Dark I-V curve of CAS-4 photodetector device; voltage swept to 10 V.

Temperature: room temperature
Geometry: Metal-semiconductor-metal thin-film photodetector.
Context: CAS-4 active layer in Au-electroded device.
Measurement source: SI p.27 · Results and Discussions · Figure S25

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Conductivity from dark I-VMarked as a best value within this paper	2 x 10^-5 S/cm	—	—	Text Rounded Reported	SI p.27 · Results and Discussions · Figure S25

Unencapsulated ageing stability by XRD and photoresponse

Photoresponse and photoelectrochemistry X-ray diffraction and scattering

CAS-4 thin film-based Au photodetector · Electrode

CAS-4 thin film stored directly in air for one month; SI text specifies 25 C, 45% RH; fresh and one-month LCP/RCP photoresponse compared.

Atmosphere: Air, 25 C, 45% RH
Geometry: CAS-4 thin-film photodetector.
Context: CAS-4 active thin film/device.
Measurement source: SI p.30 · Results and Discussions · Figure S30

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
One-month air stability	performance changes after environmental storage are negligible	—	—	Text Qualitative	SI p.30 · Results and Discussions · Figure S30

Hall effect measurement, van der Waals/four-point probe mode

Electrical conductivity Hall-effect measurements

Highly oriented CAS-4 thin film grown for 20 LPE-LBL cycles · Thin Film

Lake Shore M91; DC field Hall effect; start/end source voltage 1/-1 V; excitation source voltage 1 V; magnetic field 800 mT; sample dimensions 10 x 10 mm2 with silver paste contacts.

Temperature: room temperature
Geometry: Van der Pauw square sample with four wire-bonded contacts.
Context: Pristine CAS-4 thin film for intrinsic transport/control measurement.
Measurement source: SI p.7 · Hall-effect measurement · Figures S28-S29; Table S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Carrier mobilityMarked as a best value within this paper	31 cm2 V^-1 s^-1	—	—	Text Rounded Reported	main p.4, article p.26677 · CP Photodetection Performance of CAS-4 MOF Thin Film · Table S2
Semiconductor type	p-type semiconductor characteristics	—	—	Text Qualitative	main p.4, article p.26677 · CP Photodetection Performance of CAS-4 MOF Thin Film · Table S2

Transient photocurrent rise/down time

Photoresponse and photoelectrochemistry

CAS-4 thin film-based Au photodetector · Electrode

600 nm CP illumination; 10 V bias; LCP and RCP transient response curves.

Temperature: room temperature
Geometry: Au-electroded CAS-4 thin-film device.
Context: CAS-4 active layer in Au-electroded device.
Measurement source: main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure 4i; Figure S26

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
LCP response time	approximately 200 ms	—	—	Text Approximate	main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure 4i
RCP response time	approximately 250 ms	—	—	Text Approximate	main p.6, article p.26679 · CP Photodetection Performance of CAS-4 MOF Thin Film · Figure S26

Unpolarised light photoresponse and I-V

Photoresponse and photoelectrochemistry Electrical conductivity

CAS-4 thin film-based Au photodetector · Electrode

CAS-4 thin-film device under unpolarised light; wavelength scan 200-800 nm and I-V under 600 nm illumination at 77.82 uW cm^-2.

Temperature: room temperature
Geometry: Au-electroded CAS-4 thin-film device.
Context: CAS-4 active layer in Au-electroded device.
Measurement source: SI p.26 · Results and Discussions · Figures S22-S24

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Unpolarised photoresponse wavelength range	300-800 nm	—	—	Text Range	SI p.26 · Results and Discussions · Figure S22
Unpolarised-light detectivityMarked as a best value within this paper	2.37 x 10^11 Jones	—	—	Text Rounded Reported	SI p.26 · Results and Discussions · Figures S22-S24
Unpolarised-light responsivityMarked as a best value within this paper	1.37 A/W	—	—	Text Rounded Reported	SI p.26 · Results and Discussions · Figures S22-S24