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From Rigid to Flexible: Ce-BTC-MOF-Enabled Self-Powered Photodetectors with Record-High Responsivity and Detectivity

Sun J., Gao S., Zhang C. et al. · ACS Applied Materials and Interfaces · 2025 · 55143-55152

3materials
6samples
5synthesis routes
14measurements
63results
5claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

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 flexible Ce-BTC/ZnO photodetector maintains strong switching behaviour after bending, retaining 98.6% of the original Ion/Ioff ratio after 160 bending cycles.

Caveat: Bending angles are shown as insets but exact angle values are not extracted in text.

7 · Results and Discussion · Figure 6a and Figure S6 · Linked to 2 structured results

Application RelevanceSupport assessment: High

The rigid Ce-BTC/n-Si self-powered photodetector achieves the paper's highest responsivity, detectivity and fastest decay time among benchmarked MOF-based self-powered photodetectors.

Caveat: Benchmark comparison is against selected literature values in Table 1.

8 · Results and Discussion · Table 1 · Linked to 3 structured results

Structure Property LinkSupport assessment: High

Increasing Ce-BTC film thickness lowers sheet resistance and carrier concentration, raises mobility and band gap, and reduces optical transmittance; 320 nm balances transparency and conductivity for devices.

Caveat: Intermediate electrical values are read approximately from figure axes where not stated in text.

8 · Conclusions · Figure 2 · Linked to 8 structured results

Transport MechanismSupport assessment: High

Ce-BTC films behave as p-type semiconductors, enabling p-n heterojunctions with n-Si and n-ZnO.

Caveat: Carrier type is reported from Hall coefficient but no raw Hall voltage data are tabulated.

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

Transport MechanismSupport assessment: Medium

Type-II band alignment and built-in electric fields in Ce-BTC/n-Si and Ce-BTC/ZnO separate photogenerated electron-hole pairs and enable self-powered UV photodetection.

Caveat: Band positions are partly calculated from UPS/Tauc data and literature ZnO values; one Ce-BTC EC value in text appears inconsistent with earlier calculation.

7 · Results and Discussion · Figure 6b · Linked to 5 structured results

Material identities

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

MaterialCompositionStructure contextSource
Ce-BTCCe-BTC; cerium 1,3,5-benzenetricarboxylate metal-organic frameworkCe3+ ions · 1,3,5-benzenetricarboxylate (BTC) from H3BTCunknown · PristineCrystalline Ce-BTC MOF; XRD peaks agree with simulated/previous Ce-BTC patterns, FTIR confirms Ce-O/carboxylate coordination, and morphology is rod-like.3 · Results and Discussion · Figures 1 and 2
Ce-BTC/n-Si heterojunction photodetectorp-Ce-BTC/n-SiCe3+ ions in Ce-BTC layer · BTC in Ce-BTC layerunknown · Compositep-Ce-BTC/n-Si p-n heterojunction with Ag on Ce-BTC and In on n-Si contacts.5 · Results and Discussion · Figure 3a
Flexible Ce-BTC/ZnO photodetectorp-Ce-BTC/n-ZnO on ITO/PICe3+ ions in Ce-BTC layer; ZnO inorganic layer · BTC in Ce-BTC layerunknown · CompositeVertical type-II Ce-BTC/ZnO flexible heterostructure with PI/ITO/ZnO/Ce-BTC/Ag stack.7 · Results and Discussion · Figure 5a

Sample register

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

Show 6 sample records
SampleForm and roleProcessing and geometrySource
Optimised 320 nm Ce-BTC thin filmresearch_0895__mat__ce_btcThin Film · Target Sample · Pristine FrameworkSelected for devices after balancing optical transmittance and conductivity.glass or device substrate · 320 nm4 · Results and Discussion · Figure 2f
Ce-BTC thin films on glass, thickness seriesresearch_0895__mat__ce_btcThin Film · Pristine Control · Pristine FrameworkCe-BTC powder dispersed in DMF, ultrasonicated, spin-coated at 3000 rpm for 30 s, dried and annealed at 120 C.glass · 78, 151, 320, 510 and 850 nm from 20, 40, 60, 80 and 100 uL spin-coating volumes3 · Results and Discussion · Figure S2
p-Ce-BTC/n-Si self-powered photodetectorresearch_0895__mat__ce_btc_n_siElectrode · Composite Sample · CompositeCe-BTC spin-coated on n-Si; Ag deposited on Ce-BTC and In on n-Si.n-Si · Ce-BTC film thickness selected as 320 nm5 · Results and Discussion · Figure 3a
Ce-BTC powderresearch_0895__mat__ce_btcPowder · Pristine Control · Pristine FrameworkWhite precipitate centrifuged, washed with ultrapure water and dried at 60 C.2 · Experimental Section
Flexible Ce-BTC/ZnO self-powered photodetectorresearch_0895__mat__ce_btc_znoElectrode · Composite Sample · CompositeVertical PI/ITO/ZnO/Ce-BTC/Ag structure; silver paste coated on Ce-BTC and dried.ITO/PI · Ce-BTC active area 0.25 cm2; effective device area 0.21 cm27 · Results and Discussion · Figure 5a
ZnO film used in flexible Ce-BTC/ZnO deviceresearch_0895__mat__ce_btc_znoThin Film · Composite Component · CompositeZnO nanoparticles spin-coated from chloroform-methanol-n-butanol dispersion and annealed at 120 C for 15 min.glass for characterisation; ITO/PI for device2 · Experimental Section