Spectroscopy — Metal-organic framework nanosheets for enhanced performance of organic photovoltaic cells

5 measurement groups · 19 results

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

Spectroscopic ellipsometry

P3HT-Zn2(ZnTCPP) 1:0.5 blend film · Thin Film

WVASE32 fitting; Cauchy model in 700-900 nm then B-spline/Kramers-Kronig fitting of n and k.

Temperature: room temperature
Atmosphere: ambient
Geometry: thin films
Context: P3HT and P3HT-Zn2(ZnTCPP) optical functions
Measurement source: 35 · 12. Spectroscopic ellipsometry · Fig. S27-S28

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
n and k spectra	n and k extracted by spectroscopic ellipsometry; no numeric table	—	—	Qualitative Qualitative	35 · Fig. S27-S28

FTIR spectroscopy

Infrared spectroscopy

Zn2(ZnTCPP) MON suspension · Nanosheet

Bulk MOF compared with exfoliated MONs.

Temperature: room temperature
Atmosphere: not reported
Geometry: solid-state IR comparison
Context: pristine bulk/MON comparison
Measurement source: 5 · 3. Structural characterisations · Fig. S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
FTIR comparison	bulk MOF compared with exfoliated MONs; similar assigned bands	—	—	Qualitative Qualitative	5 · Fig. S3

Photoluminescence spectroscopy

Photoluminescence and fluorescence spectroscopy

P3HT-Zn2(ZnTCPP) 1:0.5 blend film · Thin Film

Solution and thin-film PL; excitation 430 nm for SI solution/thin-film PL and 500 nm for Fig. 2c thin-film blend comparison.

Temperature: room temperature
Atmosphere: ambient
Geometry: solution and spin-coated films
Context: MON and P3HT-MON composite optical interaction
Measurement source: 3-4 · 2.1 Synthesis and characterisation · Fig. 2; Fig. S10-S12

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MON PL signal increase with P3HT	30% increase	—	—	Text Exact Reported	3 · Fig. S11
P3HT solution PL quenching by MONs	70% quenching	—	—	Text Exact Reported	3 · Fig. S11
P3HT thin-film PL quenching by MONs	69.6% quenching efficiency	—	—	Text Exact Reported	3-4 · Fig. 2c
P3HT thin-film PL quenching at 1:0.5 MON ratio	70% quenching	—	—	Text Exact Reported	13 · Fig. S12
P3HT-Zn2(ZnTCPP)-PCBM PL	complete quenching of PL signal	—	—	Qualitative Qualitative	4 · Fig. 2c

Transient absorption spectroscopy

optimised P3HT-Zn2(ZnTCPP)-PCBM photovoltaic device · Thin Film

800 nm, 40 fs, 10 kHz Ti:sapphire amplifier; 500 nm pump; probes spanning 350-750 nm and 850-1300 nm; pump fluence about 130 uJ cm-2; magic-angle polarisation.

Temperature: room temperature
Atmosphere: not reported
Geometry: P3HT-PCBM and P3HT-Zn2(ZnTCPP)-PCBM films
Context: MON ternary active layer compared with P3HT-PCBM reference
Measurement source: 23-25 · 8. Transient absorption and Kinetics · Fig. S17-S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
charge population increase	more than twofold	—	—	Text Approximate	23 · Fig. S18b
new TA features with MON addition	no obvious new TA features	—	—	Qualitative Qualitative	23 · Fig. S17-S18
TA signal increase with Zn2(ZnTCPP)	roughly twice that of the sample without	—	—	Text Approximate	23 · Fig. S17

UV-vis absorption spectroscopy

UV-visible and optical absorption spectroscopy

dropcast Zn2(ZnTCPP) MON film · Thin Film

Solution spectra in suspension and thin-film spectra on quartz; MON film dropcast from 5 mg/mL suspension and dried.

Temperature: room temperature
Atmosphere: ambient
Geometry: solution cuvette and thin film on quartz
Context: pristine MON optical properties
Measurement source: 2-3 · 2.1 Synthesis and characterisation · Fig. 2; Fig. S7-S9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
optical band gap	1.72 eV	—	—	Caption Exact Reported	3 · Fig. 2d
MON suspension Q band 1	564 nm	—	—	Text Exact Reported	2 · Fig. S7
MON suspension Q band 2	601 nm	—	—	Text Exact Reported	2 · Fig. S7
solution UV-vis peak	610 nm	—	—	Caption Exact Reported	3 · Fig. 2d
MON suspension Soret band	435 nm	—	—	Text Exact Reported	2 · Fig. S7
thin-film onset wavelength	724 nm	—	—	Caption Exact Reported	3 · Fig. 2d
MON thin-film Q band 1	563 nm	—	—	Text Exact Reported	2 · Fig. 2a
MON thin-film Q band 2	605 nm	—	—	Text Exact Reported	2 · Fig. 2a
MON thin-film Soret band	440 nm	—	—	Text Exact Reported	2 · Fig. 2a