{ "schemaVersion": "1.0.0", "curatedAt": "2026-10-10", "corpus": { "id": "perovskite-stability", "title": "Perovskite · Stability conditions", "domain": "Materials research", "question": "Can these solar-cell stability results be compared on the same terms?", "summary": "Four primary reports and separate ISOS guidance show why time, environment, device identity and endpoint must travel with a claim.", "sourceVersion": "Manual source packet · 2026-10-10.1", "reviewStatus": "Curated demonstration · materials expert review pending", "scopeNote": "A purposive sample, not a systematic review. Selected public passages were read manually; no automated full-text extraction ran. Test conditions and endpoints differ, and some metadata remain unextracted. No compatible pooled analysis or clinical bias slider applies.", "sources": [ { "id": "jiang-2023", "title": "Towards linking lab and field lifetimes of perovskite solar cells", "url": "https://doi.org/10.1038/s41586-023-06610-7", "year": 2023, "locator": "Public abstract, especially its final three sentences. Subscription article body was not used for this claim.", "kind": "Primary report · abstract inspected" }, { "id": "wang-2024", "title": "Water- and heat-activated dynamic passivation for perovskite photovoltaics", "url": "https://doi.org/10.1038/s41586-024-07705-5", "year": 2024, "locator": "Abstract; “Device performance and stability”; Fig. 4c caption; “Solar-cell characterization” in Methods.", "kind": "Primary report · selected full-text passages inspected" }, { "id": "lian-2025", "title": "A supramolecular approach to improve the performance and operational stability of all-perovskite tandem solar cells", "url": "https://doi.org/10.1038/s41467-025-62391-9", "year": 2025, "locator": "Abstract. Claim belongs to the 1.77 eV single-junction cells; the separately reported tandem efficiency is not their stability measurement.", "kind": "Primary report · abstract inspected" }, { "id": "zhang-2021", "title": "Multimodal host–guest complexation for efficient and stable perovskite photovoltaics", "url": "https://doi.org/10.1038/s41467-021-23566-2", "year": 2021, "locator": "Abstract; Fig. 5c caption for atmosphere, temperature and illumination. Other experiments are not merged into this claim.", "kind": "Primary report · abstract and figure caption inspected" }, { "id": "isos-2020", "title": "Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures", "url": "https://doi.org/10.1038/s41560-019-0529-5", "year": 2020, "locator": "“Checklist for PSC stability studies”, Table 3; discussion of stability figures of merit and Table 5.", "kind": "Reporting guidance · not a device experiment" } ], "claims": [ { "id": "perovskite-temperature", "text": "Jiang and colleagues report temperature-dependent operational stability, including more than 1,000 hours at 85 °C and nearly 8,200 hours at 50 °C with a projected 20% degradation.", "status": "Author-reported · abstract scope", "sourceIds": [ "jiang-2023" ], "caveat": "The endpoint is projected. These are results from one device study at different temperatures, not interchangeable lifetimes or independent replications. Encapsulation, humidity and stability-sample counts were not extracted from the abstract.", "conditions": [ { "label": "Device", "value": "Study-specific p–i–n perovskite stack" }, { "label": "Temperature", "value": "85 °C and 50 °C; distinct conditions" }, { "label": "Illumination", "value": "Illuminated operation; spectrum not extracted" }, { "label": "Environment", "value": "Humidity and encapsulation not extracted" }, { "label": "Endpoint", "value": "Projected 20% degradation; not a common measured T80" } ] }, { "id": "perovskite-humid-heat", "text": "The encapsulated HUBLA device retained 88% of its initial efficiency after 1,000 hours of maximum-power-point tracking at 85 °C and about 30% relative humidity.", "status": "Author-reported · selected passages checked", "sourceIds": [ "wang-2024" ], "caveat": "This is the Fig. 4c experiment in air, not the paper’s separate unencapsulated nitrogen experiment. The stability device’s initial efficiency is 23.0%, not the champion efficiency.", "conditions": [ { "label": "Device", "value": "HUBLA p–i–n device; Fig. 4c" }, { "label": "Temperature", "value": "85 °C" }, { "label": "Illumination", "value": "1 sun; maximum-power-point tracking" }, { "label": "Environment", "value": "Air; about 30% RH; encapsulated" }, { "label": "Endpoint", "value": "88% of initial PCE at 1,000 h" } ] }, { "id": "perovskite-wide-bandgap", "text": "Lian and colleagues report 95% efficiency retention after 1,000 hours of maximum-power-point tracking for their 1.77 eV perovskite cells.", "status": "Author-reported · abstract scope", "sourceIds": [ "lian-2025" ], "caveat": "This stability claim concerns the single-junction wide-bandgap cells. The abstract separately reports tandem efficiency. Temperature, atmosphere, encapsulation and sample counts were not extracted for this packet.", "conditions": [ { "label": "Device", "value": "Supramolecular-engineered 1.77 eV cells" }, { "label": "Temperature", "value": "Not extracted from abstract" }, { "label": "Illumination", "value": "Maximum-power-point tracking; spectrum not extracted" }, { "label": "Environment", "value": "Humidity and encapsulation not extracted" }, { "label": "Endpoint", "value": "95% of initial efficiency at 1,000 h" } ] }, { "id": "perovskite-inert-operation", "text": "The host–guest-treated cells retained over 95% of their performance during 500 hours of continuous operation without encapsulation.", "status": "Author-reported · abstract and caption scope", "sourceIds": [ "zhang-2021" ], "caveat": "Fig. 5c specifies nitrogen and 25 °C. An unencapsulated test in nitrogen is not an ambient-air humidity test or an outdoor lifetime demonstration.", "conditions": [ { "label": "Device", "value": "Host–guest-treated perovskite device; Fig. 5c" }, { "label": "Temperature", "value": "25 °C" }, { "label": "Illumination", "value": "AM1.5G, 100 mW/cm²; maximum-power-point tracking" }, { "label": "Environment", "value": "Nitrogen; unencapsulated" }, { "label": "Endpoint", "value": "Over 95% performance retention at 500 h" } ] }, { "id": "perovskite-reporting", "text": "ISOS guidance calls for explicit ageing conditions, device information and sample counts so stability reports can be interpreted and compared.", "status": "Reporting guidance · not experimental evidence", "sourceIds": [ "isos-2020" ], "caveat": "A reporting framework does not make these four experiments statistically compatible. Missing metadata, different devices and different endpoints prevent a defensible pooled estimate in this packet.", "conditions": [ { "label": "Role", "value": "Reporting framework, separate from primary reports" }, { "label": "Inspect", "value": "Temperature, atmosphere, illumination and encapsulation" }, { "label": "Preserve", "value": "Device/sample identity and normalization baseline" }, { "label": "Do not infer", "value": "Shared conditions from a shared “stable” label" } ] } ], "lineage": [ { "id": "perovskite-reports", "label": "Four primary reports → four experiment-specific claims", "sourceIds": [ "jiang-2023", "wang-2024", "lian-2025", "zhang-2021" ], "status": "Manually selected; study independence not adjudicated" }, { "id": "perovskite-guidance", "label": "ISOS reporting framework", "sourceIds": [ "isos-2020" ], "status": "Guidance is not counted as an experiment" }, { "id": "perovskite-comparison", "label": "Conditions compared; incompatible endpoints kept separate", "sourceIds": [ "jiang-2023", "wang-2024", "lian-2025", "zhang-2021", "isos-2020" ], "status": "No pooled estimate; no source extraction automation" } ], "capabilities": [ "Source-linked claims", "Condition comparison", "Explicit missing metadata", "No compatible pooled analysis" ] }, "analysis": null }