Primary studyCore evidenceThin Film Device

Oriented Growth of In-Oxo Chain Based Metal-Porphyrin Framework Thin Film for High-Sensitive Photodetector

Tian Y.-B., Vankova N., Weidler P. et al. · Advanced Science · 2021 · 2100548

4materials
9samples
4synthesis routes
12measurements
43results
5claims and caveats

Evidence map

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Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: High

The 15-cycle, approximately 170 nm In-TCPP SURMOF photodetector gives the best violet-light sensitivity, with high responsivity, detectivity and fast response.

Caveat: Application metrics are device-specific and measured under 420 nm irradiation at 10 V bias.

5-6 · Results and Discussion; Conclusions · Figure 3 · Linked to 6 structured results

Phase AssignmentSupport assessment: High

The LPE layer-by-layer route yields highly crystalline In-TCPP SURMOF with [021] orientation perpendicular to the substrate and In-oxo chains/porphyrin rows parallel to the substrate.

Caveat: Structure assignment is by comparison with simulated/reported bulk In-TCPP structure; no CIF file was assigned for this extraction.

3,6 · Results and Discussion; Conclusions · Figure 1a · Linked to 4 structured results

Structure Property LinkSupport assessment: Medium

The oriented In-TCPP SURMOF device has a much higher on/off ratio than the powder-derived mixed-orientation In-TCPP thin film under violet light.

Caveat: The mixed-film on/off value is estimated from Figure 3c; the exact comparison value is not written in the text.

4-5 · Results and Discussion · Figure 3c · Linked to 2 structured results

Transport MechanismSupport assessment: Low

The authors propose that defects such as oxygen vacancies in In-oxo chains provide donor/acceptor states for exciton dissociation, contributing to high detectivity.

Caveat: The defect states were not directly observed; the authors explicitly state the defect density is too low to see directly in UV-vis experiments.

6 · Results and Discussion · Linked to 2 structured results

Transport MechanismSupport assessment: Medium

Charge transport is deduced to occur by hopping along highly ordered porphyrin rows, because the calculated bands are extremely flat and the frontier bands are porphyrin-dominated.

Caveat: Mechanistic statement is inferred from DFT and spectroscopy; direct carrier mobility or conductivity was not reported.

6-7 · Results and Discussion; Conclusions · Figure 4; Figure S17 · Linked to 2 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
In-oxo chain computational modelIn-oxo based chain modelIn-oxo chain · carboxylate/hydroxyl chain model without porphyrin linker1D · Model SystemModel used to compare electronic structure of the inorganic In-oxo chain motif.6 · Results and Discussion · Figure 4
In-TCPP MOF computational modelIn-TCPP MOF modelIn-oxo chain nodes · TCPP porphyrinic units3D · Model SystemPeriodic structural unit cell used for DFT band-structure and density-of-states calculations.6 · Results and Discussion · Figure 4
In-TCPP SURMOFIn-TCPP; In(COO)2(OH) chain stoichiometry reported for the In-oxo chainIndium(III) oxo chains / In-oxo strands · TCPP, 5,10,15,20-tetra(4-carboxyphenyl)porphyrin3D · PristineSurface-coordinated porphyrinic MOF thin film with [021] orientation; In-oxo chains and porphyrin rows aligned parallel to the substrate.1-2 · Abstract; Introduction · Scheme 1
Mix-oriented In-TCPP thin filmIn-TCPPIndium centres / In-oxo components · TCPP, 5,10,15,20-tetra(4-carboxyphenyl)porphyrin3D · PristinePolycrystalline or mixed-orientation In-TCPP film prepared by solvothermal synthesis on a functional substrate; rough and noncompact by SEM.3-4 · Results and Discussion · Figures S1, S3, S9

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 9 sample records
SampleForm and roleProcessing and geometrySource
In-oxo chain DFT modelresearch_0621__mat__mat_in_oxo_chain_modelModel · Model System · ModelPeriodic chain model relaxed/calculated with Crystal17.7 · Computational details · Figures S14-S17
In-TCPP MOF DFT modelresearch_0621__mat__mat_in_tcpp_modelModel · Model System · ModelPeriodic model relaxed/calculated with Crystal17.7 · Computational details · Figures S14-S17
Mix-oriented In-TCPP thin filmresearch_0621__mat__mat_mix_in_tcppThin Film · Pristine Control · Pristine FrameworkSolvothermal DMF synthesis at 120 deg C for 1 day on functional substrate, washed with DMF and ethanol, dried in vacuum at 60 deg C.functional substrate; assembled on SiO2/Si substrate5-6 · Fabrication of In-TCPP SURMOF and mix-oriented thin film
In-TCPP SURMOF on MUD-functionalised Au QCM-D chipresearch_0621__mat__mat_in_tcpp_surmofThin Film · Target Sample · Pristine FrameworkIn-situ LPE growth monitored by QCM-D at 50 deg C with ethanol baseline/rinsing.11-mercapto-1-undecanol SAM-functionalised Au-coated QCM working electrode6 · in-situ monitoring the growth process of In-TCPP SURMOF · Figure S2
In-TCPP SURMOF, 10 LPE cyclesresearch_0621__mat__mat_in_tcpp_surmofThin Film · Pristine Control · Pristine FrameworkLayer-by-layer LPE dipping; 10 cycles.OH-functionalised SiO2/Si · approximately 130 nm4 · Results and Discussion · Figure 2; Figure S7
In-TCPP SURMOF, 15 LPE cyclesresearch_0621__mat__mat_in_tcpp_surmofThin Film · Target Sample · Pristine FrameworkLayer-by-layer LPE dipping; 15 cycles; rinsed with ethanol between In(NO3)3 and TCPP steps.OH-functionalised SiO2/Si; functionalised Au for IRRAS/QCM variants · about 170 nm2,5 · Introduction; Results and Discussion · Figure 2
In-TCPP SURMOF, 20 LPE cyclesresearch_0621__mat__mat_in_tcpp_surmofThin Film · Pristine Control · Pristine FrameworkLayer-by-layer LPE dipping; 20 cycles.OH-functionalised SiO2/Si · approximately 240 nm4-5 · Results and Discussion · Figure 2; Figure S12; Table S4
In-TCPP SURMOF, 5 LPE cyclesresearch_0621__mat__mat_in_tcpp_surmofThin Film · Pristine Control · Pristine FrameworkLayer-by-layer LPE dipping; 5 cycles.OH-functionalised SiO2/Si · approximately 60 nm4 · Results and Discussion · Figure 2; Figure S7
In-TCPP SURMOF-based two-terminal photodetectorresearch_0621__mat__mat_in_tcpp_surmofElectrode · Target Sample · Pristine Framework15-cycle In-TCPP SURMOF patterned with Ag electrodes by thermal evaporation through copper interdigital shadow mask.In-TCPP SURMOF thin film on SiO2/Si with Ag electrodes · MOF film approximately 170 nm; effective illuminated area 0.01 cm26 · Fabrication of In-TCPP based photodetector · Figure 3a