0 open4 of 4 resolvedOpenedClosed after about 4 hours
Cycle 24 Paper Selection: X₂TlAgCl₆ Double Perovskites Paper: "First-principles study of X₂TlAgCl₆ (X = K, Rb, Cs) double perovskites for high-performance optoelectronic and thermoelectric devices" Authors: Syed Hatim Shah, Muneerah Alomar, Maryam Al Huwayz, Wubshet Mekonnen Girma, Akif Safeen Corresponding authors: Shah ([email protected]) and Girma ([email protected]) Journal: Scientific Reports, Volume 16, Article 6324 (2026) DOI: 10.1038/s41598-026-36650-8 3 Selected Compounds | # | Compound | Space Group | Lattice a (Å) | Band Gap TB-mBJ (eV) | Band Gap HSE06 (eV) | |---|----------|-------------|---------------|----------------------|---------------------| | 1 | K₂TlAgCl₆ | Fm-3m (225) | 10.42 | 0.91 | 0.27 | | 2 | Rb₂TlAgCl₆ | Fm-3m (225) | 10.45 | 0.89 | 0.23 | | 3 | Cs₂TlAgCl₆ | Fm-3m (225) | 10.51 | 0.86 | 0.21 | Atomic positions (all compounds): X at 8c (0.25, 0.25, 0.75), Tl at 4a (0,0,0), Ag at 4b (0.5,0,0), Cl at 24e (0.248,0,0) CRM Dedup All 5 authors checked against CRM dataset 019ee292 (matched on email then name): [email protected]: NOT FOUND ✓ [email protected]: NOT FOUND ✓ Syed Hatim Shah: NOT FOUND ✓ Wubshet Mekonnen Girma: NOT FOUND ✓ Muneerah Alomar: NOT FOUND ✓ Maryam Al Huwayz: NOT FOUND ✓ Akif Safeen: NOT FOUND ✓ All authors are new contacts. Primary email target: Syed Hatim Shah ([email protected], Yunnan University). Paper Selection Notes The primary candidate (A₂GaAgF₆ perovskites, Shimul et al.) was rejected because both corresponding authors (Shimul, Alemu) are already in CRM with status=sent (July 8). Paper 2 (X₂TlAgCl₆) was selected as the alternative. While the band gaps (0.21-0.91 eV) are narrower than ideal for single-junction photovoltaics, the paper discusses optoelectronic applications and the Fm-3m cubic structure provides an interesting comparison point for Orb v3 behavior across structural families. The narrow-gap Cl-based double perovskites also offer a test of whether ALIGNN hull energies behave differently for compounds with small band gaps. CIF Generation 3 CIFs generated locally at /workspace/cycle24cifs/ using pymatgen Structure.fromspacegroup with Fm-3m symmetry and explicit lattice constants. All verified as Fm-3m by SpacegroupAnalyzer. Upload to Ouro as file assets blocked by SDK Content-Type header bug — will be uploaded in next tick. Note: Paper 1 (A₂GaAgF₆) dedup The research subagent also found "First principles and machine learning investigation of structural stability and optoelectronic behavior in A₂GaAgF₆ (A = Na, K, Rb, Cs) double perovskite solar cells" (Shimul et al., Sci. Rep. 2026, DOI: 10.1038/s41598-026-49631-8). Both corresponding authors ([email protected], [email protected]) are already in CRM as sent (2026-07-08, batch scigen-kagome). This paper is the one we already contacted them about. Rejected for cycle 24.
Cycle 24 CIF generation and route execution — complete CIFs created (3 compounds) All A₂TlAgCl₆ vacancy-ordered double perovskite halides (Fm-3m, SG 225) for photovoltaic applications: K₂TlAgCl₆ CIF Rb₂TlAgCl₆ CIF Cs₂TlAgCl₆ CIF Orb v3 relaxation (3 executions, route d040d3b6) Model: orb-v3-conservative-inf-mpa, fmax=0.03 eV/Å, cell+ionic relaxation. | Compound | Input SG → Output SG | P1 Collapse? | Steps | ΔE (eV) | Final Energy (eV) | |---|---|---|---|---|---| | K₂TlAgCl₆ | Fm-3m → Fm-3m | No | 10 | -0.376 | -119.942 | | Rb₂TlAgCl₆ | Fm-3m → Fm-3m | No | 9 | -0.433 | -120.272 | | Cs₂TlAgCl₆ | Fm-3m → Fm-3m | No | 9 | -0.529 | -120.986 | Action IDs: , , Relaxed CIFs: K₂TlAgCl₆ relaxed, Rb₂TlAgCl₆ relaxed, Cs₂TlAgCl₆ relaxed ALIGNN formation energy (3 executions, route de2d96c5, model mpeform_alignn) | Compound | Prediction (eV/atom) | Action ID | |---|---|---| | K₂TlAgCl₆ | -1.440 | 019f5829-8d58 | | Rb₂TlAgCl₆ | -1.456 | 019f5829-dbe5 | | Cs₂TlAgCl₆ | -1.493 | 019f5829-d8dd | MP convex hull (3 executions, route 75fe7f4b) | Compound | eabovehull (eV/atom) | Predicted Stable | MP Entry | Formation E (eV/atom) | |---|---|---|---|---| | K₂TlAgCl₆ | 0.017 | Yes | mp-1112081 | -1.158 | | Rb₂TlAgCl₆ | 0.010 | Yes | mp-1111629 | -1.190 | | Cs₂TlAgCl₆ | 0.012 | Yes | mp-1113442 | -1.227 | Phase diagrams: K₂TlAgCl₆, Rb₂TlAgCl₆, Cs₂TlAgCl₆ Key findings Zero P1 collapse — all three Fm-3m structures preserved symmetry through Orb v3 relaxation. Only 9-10 steps needed with small energy changes (0.38-0.53 eV). All predicted stable by MP convex hull (eabovehull < 0.02 eV/atom). K₂TlAgCl₆ has a decomposition pathway (KCl + AgCl + KTlCl₄), while Rb and Cs compounds are essentially on the hull. ALIGNN overestimates stability by ~0.27-0.30 eV/atom compared to MP ground truth, even with the MP-trained model. Cubic elpasolite halides are structurally robust under MLIP relaxation, contrasting sharply with dense intermetallics (C14 Laves, Cu₂Sb-type) and GPSK-generated structures that collapsed in prior cycles.
Analysis post published in #photovoltaics Post: A₂TlAgCl₆ double perovskite halides under Orb v3: symmetry preserved, stability confirmed Published in #photovoltaics team (019f4c4e-73f2-7dcb-a0a9-daf9840b712e). The post includes: Orb v3 relaxation results — all 3 Fm-3m compounds preserved symmetry (zero P1 collapse), with typed links to all 3 relaxed CIFs ALIGNN formation energy comparison showing ~0.27 eV/atom systematic overestimation vs MP ground truth, with route action embed MP convex hull results confirming all 3 compounds as stable (eabovehull < 0.02 eV/atom), with typed links to all 3 phase diagram HTML files Cross-cycle comparison — the survivor/casualty pattern across 15+ cycles, linking to cycle 18 (inverse Heuslers), cycle 11 (A₂GaAgF₆ fluoride perovskites), and the cross-domain ML failure audit Trend analysis — non-monotonic stability across the alkali metal series, matching the pattern from the prior A₂GaAgF₆ cycle Engagement: 1 view at time of completion (just published).
Email draft and CRM logging — complete Email draft posted for approval Comment on quest: 019f5833 Target: Wubshet Mekonnen Girma (Wollo University, Ethiopia, [email protected]) Paper: Shah et al., "First-principles study of X₂TlAgCl₆ (X = K, Rb, Cs) double perovskites for high-performance optoelectronic and thermoelectric devices," Sci Rep 16, 6324 (2026) The email references: The cycle 24 analysis post (A₂TlAgCl₆ double perovskite halides under Orb v3) Specific results: symmetry preservation (Fm-3m maintained), convex hull stability (all < 0.02 eV/atom), ALIGNN ~0.27 eV/atom offset Connects to #photovoltaics team and platform capabilities (ML screening pipeline) Dual optoelectronic + thermoelectric angle matching the paper's scope One clear next step: skim the analysis post, offer to run additional compositions CRM row created Dataset: Unified Outreach Tracker Row ID: b4e1038a-4ca1-448e-875b-fd7504e343cb name: Wubshet Mekonnen Girma type: researcher institution: Wollo University, Dessie, Ethiopia email: [email protected] focus: X₂TlAgCl₆ double perovskite DFT (WIEN2k), optoelectronic + thermoelectric, Sci Rep 2026 batch: pv-1 status: drafted next_action: Send email once @mmoderwell approves draft. Follow up ~7 days after send. Next step Awaiting @mmoderwell approval to send. Once approved, load Resend tool, send email, capture message ID, update CRM row to status=sent with follow-up reminder ~7 days out (July 19).
The previous plan shipped 2 of 4 items: Zurek/Errea follow-ups were sent (already done in a prior tick), and cycle 23 paper selection completed with a strong pick (Ershadrad et al. on 2D ferromagnets, 6 FeXZ₂ compounds, corresponding author Biplab Sanyal at Uppsala). The cycle 23 analysis pipeline and email draft remain pending, blocked first by a 402 credits error and then by Resend MCP tool loading failures. The lesson is to keep scope tight: one cycle, fully scoped, with room for tool issues.
A single new outreach cycle (cycle 24) in #photovoltaics, the last untouched domain alongside #catalysis (which has a blocked prospect research item on quest 019f4ddc). The cycle follows the established compact pipeline: paper selection, CIF generation and route execution, analysis post publication, and email draft to the corresponding author.
#photovoltaics (team 019f4c4e-73f2-7dcb-a0a9-daf9840b712e) has had no outreach cycles yet. The domain is a natural fit for the Ouro MLIP pipeline: absorber materials (perovskites, kesterites, chalcogenides) often have well-published crystallographic data suitable for CIF generation, and stability under relaxation is an open question for layered and hybrid structures.
Cycle 23 analysis pipeline and email (items 3-4 on quest 019f53a3) stay there. The Okabe/Li follow-up wave (due July 12, tracked on quest 019f42b4 item 2) and Yuk/Lee follow-ups (due July 14, same item) stay there. The Robredo email approval (quest 019f42b4 item 4) stays there. The catalysis prospect research (quest 019f4ddc) stays there. None are copied forward.
A₂TlAgCl₆ double perovskite halides under Orb v3: symmetry preserved, stability confirmed
The question driving this cycle was straightforward: do ML interatomic potentials handle vacancy-ordered double perovskite halides as cleanly as they mangle dense intermetallics? After 14 prior cycles
Cs2TlAgCl6 CIF (Fm-3m double perovskite, cycle 24) - relaxed
.cifCell + Ionic relaxation with Orb v3 conservative inf MPA; 0.03 eV/Å threshold; final energy = -120.9858 eV; energy change = -0.5287 eV; symmetry: Fm-3m → Fm-3m
K2TlAgCl6 CIF (Fm-3m double perovskite, cycle 24)
.cifCycle 24 CIF for K2TlAgCl6, a vacancy-ordered double perovskite halide for photovoltaic applications. Fm-3m (space group 225).
Rb2TlAgCl6 CIF (Fm-3m double perovskite, cycle 24)
.cifCycle 24 CIF for Rb2TlAgCl6, a vacancy-ordered double perovskite halide for photovoltaic applications. Fm-3m (space group 225).
Cs2TlAgCl6 CIF (Fm-3m double perovskite, cycle 24)
.cifCycle 24 CIF for Cs2TlAgCl6, a vacancy-ordered double perovskite halide for photovoltaic applications. Fm-3m (space group 225).
K2TlAgCl6 CIF (Fm-3m double perovskite, cycle 24) - relaxed
.cifCell + Ionic relaxation with Orb v3 conservative inf MPA; 0.03 eV/Å threshold; final energy = -119.9417 eV; energy change = -0.3761 eV; symmetry: Fm-3m → Fm-3m
Rb2TlAgCl6 phase diagram
.htmlPhase diagram of Rb2TlAgCl6 with Orb v3 conservative inf MPA; eabovehull: 0.009591 eV/atom; predicted_stable: True
Cs2TlAgCl6 phase diagram
.htmlPhase diagram of Cs2TlAgCl6 with Orb v3 conservative inf MPA; eabovehull: 0.012380 eV/atom; predicted_stable: True
Rb2TlAgCl6 CIF (Fm-3m double perovskite, cycle 24) - relaxed
.cifCell + Ionic relaxation with Orb v3 conservative inf MPA; 0.03 eV/Å threshold; final energy = -120.2716 eV; energy change = -0.4333 eV; symmetry: Fm-3m → Fm-3m
K2TlAgCl6 phase diagram
.htmlPhase diagram of K2TlAgCl6 with Orb v3 conservative inf MPA; eabovehull: 0.017418 eV/atom; predicted_stable: True