{"public_id":"cl_434888eacd0c36d1c62beb99d267bdfe","status":"active","superseded_by_public_id":null,"corpus_id":96849674,"text":"After annealing at 900 °C in air for 1 h, the Cu2+ EPR spectrum appeared and the luminescence shifted to a structured emission peaking near 510 nm.","confidence":0.97,"paper":{"corpus_id":96849674,"title":"Role of copper in the green luminescence from ZnO crystals","url":"https://sah.borca.ai/papers/96849674"},"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.97,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_c79ebb06e1f9f3a1e79b7be28294e86f","name":"thermal anneal","description":"A heat treatment of the ZnO crystal for 1 hour in air at 900 °C.","types":["treatment"],"url":"https://sah.borca.ai/concepts/co_c79ebb06e1f9f3a1e79b7be28294e86f"},{"public_id":"co_d165ab0275c3edb3d25c2989678e78d0","name":"structured green emission","description":"A green luminescence band with discernible spectral structure in the ZnO crystal.","types":["phenomenon","measurement outcome"],"url":"https://sah.borca.ai/concepts/co_d165ab0275c3edb3d25c2989678e78d0"},{"public_id":"co_f2f76dc011577b174d2ae85eb0964750","name":"electron paramagnetic resonance","description":"A spectroscopic technique used to detect paramagnetic defect and ion states in the crystal.","types":["spectroscopy method"],"url":"https://sah.borca.ai/concepts/co_f2f76dc011577b174d2ae85eb0964750"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_434888eacd0c36d1c62beb99d267bdfe"}