期刊
JOURNAL OF MATERIOMICS
卷 8, 期 3, 页码 693-701出版社
ELSEVIER
DOI: 10.1016/j.jmat.2021.11.002
关键词
Defect-rich ZnO; Photodetectors; Light energy; Photothermoelectric; Self-powered
资金
- National Natural Science Foundation of China [51973099, 21761029]
- Taishan Scholar Program of Shandong Province [tsqn201812055]
- First Division Alar Science and Technology Plan Project in Xinjiang Corps [2019GJJ04]
- State Key Laboratory of Bio-Fibers and Eco-Textiles (Qingdao University) [ZKT04, GZRC202007]
- Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology [2017K005]
- Training Program for Outstanding Young Teachers in Xinjiang Corps
- Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps [CRUZD2003]
This study demonstrates a defect promoted photothermoelectric effect in a densely aligned ZnO nanorod array, leading to significant improvement in photothermoelectric energy conversion and self-powered photodetection. The synergism between intrinsic defects and extra temperature field plays an important role in promoting the photothermoelectric properties of dense ZnO nanorod array.
Sustainable light energy from ambient environment has attracted particular attention to meet the evergrowing need of small-scale electronics. The modulation of intercorrelated thermal and electronic transport is one of the crucial aspects for reliable photothermoelectric electronics. Herein, a defect promoted photothermoelectric effect is demonstrated in densely aligned ZnO nanorod array with rich lattice defects. The defect-rich ZnO device delivers high electrical conductivity and large Seebeck coefficient to enable significant improvement of photothermoelectric energy conversion and self-powered photodetection. The position sensitivity reaches approximately 0.19 mV mm(-1), and the temperature gradient induced electric field makes up for the suppression in the photothermoelectric process. The synergism between intrinsic defects and extra temperature field plays an important role in promoting the photothermoelectric properties of dense ZnO nanorod array. This study is interesting for interpreting the thermo-phototronic phenomena as well as demonstrating the possibility of defect engineering and phonon engineering to enable highly efficient light energy scavenging and self-powered photodetection. (C) 2021 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
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