Yttrium Doped Copper (II) Oxide Hole Transport Material as Efficient Thin Film Transistor
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Bibliographic record
Abstract
Abstract This work reports development of yttrium doped copper oxide (Y−CuO) as a new hole transport material with supplemented optoelectronic character. The pure and Y‐doped CuO thin films are developed through a solid‐state method at 200 °C and recognized as high performance p‐channel inorganic thin‐film transistors (TFTs). CuO is formed by oxidative decomposition of copper acetylacetonate, yielding 100 nm thick and conductive (40.9 S cm −1 ) compact films with a band gap of 2.47 eV and charge carrier density of ∼1.44×10 19 cm −3 . Yttrium doping generates denser films, Cu 2 Y 2 O 5 phase in the lattice, with a wide band gap of 2.63 eV. The electrical conductivity increases nine‐fold on 2 % Y addition to CuO, and the carrier density increases to 2.97×10 21 cm −3 , the highest reported so far. The TFT devices perform remarkably with high field‐effect mobility (μ sat ) of 3.45 cm 2 V −1 s −1 and 5.3 cm 2 V −1 s −1 , and considerably high current‐on/off ratios of 0.11×10 4 and 9.21×10 4 , for CuO and Y−CuO films, respectively (at −1 V operating voltage). A very small width hysteresis, 0.01 V for CuO and 1.92 V for 1 % Y−CuO, depict good bias stability. Both the devices work in enhancement mode with stable output characteristics for multiple forward sweeps (5 to −60 V) at −1V g .
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it