{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:C2BGNDCYNIJAC5KLILGLB5NYZS","short_pith_number":"pith:C2BGNDCY","canonical_record":{"source":{"id":"1904.04752","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-09T16:01:33Z","cross_cats_sorted":[],"title_canon_sha256":"2e47f960449370382793b85fa0dcb57b26d5a4508d138a361393bad56d0e2552","abstract_canon_sha256":"2bd4312c62fd9d0e78c954d672147041429a479ef89de3d480a2d440591bf264"},"schema_version":"1.0"},"canonical_sha256":"1682668c586a1201754b42ccb0f5b8ccb0af1925f81de78f276919c2af6bed5f","source":{"kind":"arxiv","id":"1904.04752","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.04752","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"arxiv_version","alias_value":"1904.04752v2","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.04752","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"pith_short_12","alias_value":"C2BGNDCYNIJA","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"pith_short_16","alias_value":"C2BGNDCYNIJAC5KL","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"pith_short_8","alias_value":"C2BGNDCY","created_at":"2026-07-05T00:00:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:C2BGNDCYNIJAC5KLILGLB5NYZS","target":"record","payload":{"canonical_record":{"source":{"id":"1904.04752","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-09T16:01:33Z","cross_cats_sorted":[],"title_canon_sha256":"2e47f960449370382793b85fa0dcb57b26d5a4508d138a361393bad56d0e2552","abstract_canon_sha256":"2bd4312c62fd9d0e78c954d672147041429a479ef89de3d480a2d440591bf264"},"schema_version":"1.0"},"canonical_sha256":"1682668c586a1201754b42ccb0f5b8ccb0af1925f81de78f276919c2af6bed5f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:00:34.374155Z","signature_b64":"xxhoMzd4ShRpfWlEaW5rQepTNAhr7sliLIhS7cwA9AzObFEBtnFU52aKP6XJ6gErnHDLOU++w/Y3F30QvTA9CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1682668c586a1201754b42ccb0f5b8ccb0af1925f81de78f276919c2af6bed5f","last_reissued_at":"2026-07-05T00:00:34.373762Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:00:34.373762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.04752","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:00:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mUEZsFMlAVjivS03Zx4NXjjdilXZflYOs7Sms3AxGZ3OINyvG4r31VgvxJ6lIGlwfGw6o7mZG7wBxUFBs9iJBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T09:22:00.475743Z"},"content_sha256":"5a6a9ef12cc77f1b0790708afc1998bbcd371da0b17a989e87a94a0ae3369165","schema_version":"1.0","event_id":"sha256:5a6a9ef12cc77f1b0790708afc1998bbcd371da0b17a989e87a94a0ae3369165"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:C2BGNDCYNIJAC5KLILGLB5NYZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Dye-Sensitized CdSe Nanocrystal Optical Transistor with High ON/OFF Ratio in the First Telecom Window with 74 ns Rise Time","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alfred Meixner, Christine Schedel, Jannika Lauth, Jonas Hiller, Kai Braun, Krishan Kumar, Marcus Scheele, Quan Liu","submitted_at":"2019-04-09T16:01:33Z","abstract_excerpt":"We report an optically gated transistor composed of CdSe nanocrystals (NCs), sensitized with the dye Zinc beta-tetraaminophthalocyanine for operation in the first telecom window. This device shows a high ON/OFF ratio of six orders of magnitude in the red spectral region and an unprecedented 4.5 orders of magnitude at 847 nm. By transient absorption spectroscopy, we reveal that this unexpected infrared sensitivity is due to electron transfer from the dye to the CdSe NCs within 5 ps. We show by time-resolved photocurrent measurements that this enables fast rise times during near-infrared optical"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.04752","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1904.04752/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:00:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QoSCaZiSprLNW/cMk4kPrqq8b7X2I1bt7W0Ds+ajOxWINEbqtNltuyNTVC7ROvZbxj+iTyBvwdPTeLohPW5jAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T09:22:00.477434Z"},"content_sha256":"d8572721dfed7a4bed979af5429ac2c08b1a45ca4a5f6c37e7ef141cdaa3c77f","schema_version":"1.0","event_id":"sha256:d8572721dfed7a4bed979af5429ac2c08b1a45ca4a5f6c37e7ef141cdaa3c77f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C2BGNDCYNIJAC5KLILGLB5NYZS/bundle.json","state_url":"https://pith.science/pith/C2BGNDCYNIJAC5KLILGLB5NYZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C2BGNDCYNIJAC5KLILGLB5NYZS/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T09:22:00Z","links":{"resolver":"https://pith.science/pith/C2BGNDCYNIJAC5KLILGLB5NYZS","bundle":"https://pith.science/pith/C2BGNDCYNIJAC5KLILGLB5NYZS/bundle.json","state":"https://pith.science/pith/C2BGNDCYNIJAC5KLILGLB5NYZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C2BGNDCYNIJAC5KLILGLB5NYZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:C2BGNDCYNIJAC5KLILGLB5NYZS","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"2bd4312c62fd9d0e78c954d672147041429a479ef89de3d480a2d440591bf264","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-09T16:01:33Z","title_canon_sha256":"2e47f960449370382793b85fa0dcb57b26d5a4508d138a361393bad56d0e2552"},"schema_version":"1.0","source":{"id":"1904.04752","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.04752","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"arxiv_version","alias_value":"1904.04752v2","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.04752","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"pith_short_12","alias_value":"C2BGNDCYNIJA","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"pith_short_16","alias_value":"C2BGNDCYNIJAC5KL","created_at":"2026-07-05T00:00:34Z"},{"alias_kind":"pith_short_8","alias_value":"C2BGNDCY","created_at":"2026-07-05T00:00:34Z"}],"graph_snapshots":[{"event_id":"sha256:d8572721dfed7a4bed979af5429ac2c08b1a45ca4a5f6c37e7ef141cdaa3c77f","target":"graph","created_at":"2026-07-05T00:00:34Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1904.04752/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report an optically gated transistor composed of CdSe nanocrystals (NCs), sensitized with the dye Zinc beta-tetraaminophthalocyanine for operation in the first telecom window. This device shows a high ON/OFF ratio of six orders of magnitude in the red spectral region and an unprecedented 4.5 orders of magnitude at 847 nm. By transient absorption spectroscopy, we reveal that this unexpected infrared sensitivity is due to electron transfer from the dye to the CdSe NCs within 5 ps. We show by time-resolved photocurrent measurements that this enables fast rise times during near-infrared optical","authors_text":"Alfred Meixner, Christine Schedel, Jannika Lauth, Jonas Hiller, Kai Braun, Krishan Kumar, Marcus Scheele, Quan Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-09T16:01:33Z","title":"A Dye-Sensitized CdSe Nanocrystal Optical Transistor with High ON/OFF Ratio in the First Telecom Window with 74 ns Rise Time"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.04752","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5a6a9ef12cc77f1b0790708afc1998bbcd371da0b17a989e87a94a0ae3369165","target":"record","created_at":"2026-07-05T00:00:34Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"2bd4312c62fd9d0e78c954d672147041429a479ef89de3d480a2d440591bf264","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-09T16:01:33Z","title_canon_sha256":"2e47f960449370382793b85fa0dcb57b26d5a4508d138a361393bad56d0e2552"},"schema_version":"1.0","source":{"id":"1904.04752","kind":"arxiv","version":2}},"canonical_sha256":"1682668c586a1201754b42ccb0f5b8ccb0af1925f81de78f276919c2af6bed5f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1682668c586a1201754b42ccb0f5b8ccb0af1925f81de78f276919c2af6bed5f","first_computed_at":"2026-07-05T00:00:34.373762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:00:34.373762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xxhoMzd4ShRpfWlEaW5rQepTNAhr7sliLIhS7cwA9AzObFEBtnFU52aKP6XJ6gErnHDLOU++w/Y3F30QvTA9CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:00:34.374155Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.04752","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a6a9ef12cc77f1b0790708afc1998bbcd371da0b17a989e87a94a0ae3369165","sha256:d8572721dfed7a4bed979af5429ac2c08b1a45ca4a5f6c37e7ef141cdaa3c77f"],"state_sha256":"afb4c4d87b7fc5a8d79445a8a64e7692e1cfd7a452de9c04c15f0565413caa99"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y4XERxIaKE9bjBehYJw33QFhOZ0o7I2yxsmkFPVc1MX5amo2gYIecg5kklmT6bAnLVMzBVOjWpKLdBSq0G2IAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T09:22:00.484907Z","bundle_sha256":"e40a2d078c530ee15d95a171aaad4ffdbdd3e184c11d6330704a2c16c5cfe5c9"}}