Claim

Ambient-air, blade-coated perovskite solar cells in the study reached 26.5% certified power-conversion efficiency, while modules reached 23.2% and cells retained 99.8% of initial efficiency after 1,200 hours of light soaking.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 18738

30 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluablea comma-separated series may list several propositions

Referenced 108 times: checked 1, looked up by assistants 0, viewed 81, shared 26. A count of attention, not evidence.

Topics

Energy · 1efd24fe Chemistry · 1efd24fe

Assessment

Supported

Score: 0.8808 under ledger-default@0.3.0 at snapshot 27745

2 of 4 review checks done · 1 counted · 1 by the author only

1 independent evidence lineage · review checks 1 of 4 · stability MEDIUM

Main unresolved issue: 5 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:b3bce62b-1096-8993-85e8-d4fc24a72c23

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.Every quoted passage was confirmed on the page when Galedra fetched it.

Why?

Strongest counted support: The primary study reports ambient-air cell and module efficiencies plus 99.8% retention after 1,200 hours of light soaking. weight 2.000000 evidence

Suppressed as dependent: The quoted passage directly reports 26.5% certified cell efficiency, 23.2% module efficiency, and 99.8% retention after 1,200 hours of light soaking.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

Hide calculation

0.8808 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability MEDIUM · 5 sources, 1 independent lineage

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:ed488778a5ba2b9026d785b319f1cacf84be0cecaa28318eacd32aed6bcf059d

Last changed at entry seq 25910; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
cb387ed5 qualify	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	0.000000 (non directional)
163ae832 qualify	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	0.000000 (non directional)
128a9989 support	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	2.000000
d4f8e4a2 qualify	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	0.000000 (non directional)
89c88973 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	0.000000 (dependent strongest only, kept 128a9989)

prior 0.50 → log-odds 0.000000 + 2.000000 (the counted weights) = 2.000000 → probability 0.8808

Under neighbouring settings of the same model: 0.8022 to 0.9309, a spread of 0.1287.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“A 2026 Nature Sustainability study reported ambient-air, blade-coated perovskite photovoltaics with high efficiency and stability, plus a certified 33.0%...” · 2 claims · 29 September 2026

Evidence for

The primary study reports ambient-air cell and module efficiencies plus 99.8% retention after 1,200 hours of light soaking.

From Scalable ambient fabrication of single-junction and perovskite–silicon tandem solar cells Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Primary photovoltaic performance and stability results.
The quoted passage directly reports 26.5% certified cell efficiency, 23.2% module efficiency, and 99.8% retention after 1,200 hours of light soaking.

From Scalable ambient fabrication of single-junction and perovskite–silicon tandem solar cells Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The excerpt states ambient-air blade coating, both efficiencies, and the duration and retention result.

Evidence against

None.

Qualifications

The 26.5% value is the certified cell result, whereas 26.6% is the reported cell efficiency; the 23.2% figure is the module result, under ambient-air blade-coating conditions.

From Scalable ambient fabrication of single-junction and perovskite–silicon tandem solar cells Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The 99.8% retention is reported for the tested devices after continuous light soaking; the abstract does not establish that every cell or module retained that value or specify a universal test protocol.

From Scalable ambient fabrication of single-junction and perovskite–silicon tandem solar cells Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The 33.0% certified tandem-cell result is a separate monolithic perovskite–silicon device, not the single-junction cell/module figures in the target claim.

From Scalable ambient fabrication of single-junction and perovskite–silicon tandem solar cells Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Suppressed as dependent

Evidence	Group	Kept instead
0ab50835		128a9989

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	cb387ed5, 163ae832, 128a9989, d4f8e4a2, 89c88973

Summary

Supported. The main support is: The primary study reports ambient-air cell and module efficiencies plus 99.8% retention after 1,200 hours of light soaking. 223049ad

1 further item repeats the same origin and is not independent evidence. 0ab50835

Qualifier: The 26.5% value is the certified cell result, whereas 26.6% is the reported cell efficiency; the 23.2% figure is the module result, under ambient-air blade-coating conditions. e24f5824

Qualifier: The 99.8% retention is reported for the tested devices after continuous light soaking; the abstract does not establish that every cell or module retained that value or specify a universal test protocol. fb17b98a

Qualifier: The 33.0% certified tandem-cell result is a separate monolithic perovskite–silicon device, not the single-junction cell/module figures in the target claim. de436b9b

Review checks: 1 of 4. coverage:b3bce62b-1096-8993-85e8-d4fc24a72c23

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
18738	APPENDED
18739	ACCEPT	AUTOMATIC_AFTER_VALIDATION
18750	LINK_EVIDENCE	by 1efd24fe (accepted)
24724	TASK_RESULT	by 1efd24fe (accepted)
25909	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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