التفاصيل البيبلوغرافية
| العنوان: |
Construct Schottky interface containing energy-filtering effect: An efficient strategy to decouple thermopower and conductivity. |
| المؤلفون: |
Lin, Zizhen, Ping, Xiaofan, Zhao, Dongming, Wang, Lichuang, Li, Menglei, Cai, Zihe, Zhang, Yun, Li, Xinlian, Zhang, Xuankai |
| المصدر: |
Journal of Applied Physics; 7/7/2023, Vol. 134 Issue 1, p1-10, 10p |
| مصطلحات موضوعية: |
THERMOELECTRIC power, THERMOELECTRIC materials, IMPURITY centers, ELECTRIC conductivity, CHARGE carriers, SEEBECK coefficient, FILTERS & filtration |
| مستخلص: |
Organic/inorganic thermoelectric hybrids demonstrate great potential for wearable applications. However, their scalability is hindered by an inferior power factor (S 2 σ). Nowadays, achieving deep optimization of S 2 σ necessitates a strategy to decouple the Seebeck coefficient (S) and electrical conductivity (σ). In this work, we propose a strategy to break the coupling between S and σ by constructing a Schottky interface that exhibits an energy-filtering effect. We validate the feasibility of this approach using a PANI/TiN–TiO2/carbon paper. The results demonstrate a 1.16-fold increase in σ and a 1.08-fold increase in S in PANI/TiN–TiO2/carbon paper achieved through the construction of a Schottky-type TiN/TiO2 interface. The separation of hole/electron at the TiN/TiO2 interface serves as the scattering center for ionized impurity scattering and facilitates the transport pathway for charge carriers. These factors are crucial in determining the simultaneous optimization of S and σ , respectively. Additionally, the energy-filtering effect of the TiN/TiO2 interface plays a positive role in the ionized impurity scattering mechanism by selectively filtering out low-energy carriers. This further strengthens decoupling of the thermoelectric properties. The 14.9% PANI/11.2% TiN–14.5% TiO2/59.44% carbon paper displays the highest S 2 σ and achieves a high ZT value of 223.6 μVm−1 K−2 and 0.31 at 300 K, highlighting the advantages of PANI-based thermoelectric hybrids. This work provides valuable guidance for the design of thermoelectric hybrids incorporating multi-interface morphology. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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