A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performance
Selective emitters are crucial as the key component determining the energy conversion efficiency of radioisotope thermophotovoltaic (RTPV) systems. Developing selective emitter materials with high selective emissivity, high spectral efficiency and excellent high-temperature stability can effectively...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Tsinghua University Press
2025-05-01
|
| Series: | Journal of Advanced Ceramics |
| Subjects: | |
| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2025.9221072 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849426259559317504 |
|---|---|
| author | Mengtong Ma Minzhong Huang Liyan Xue Kaixian Wang Ting Zhou Huimin Xiang Canglong Wang Fan Yang Yiqun Deng Heng Chen |
| author_facet | Mengtong Ma Minzhong Huang Liyan Xue Kaixian Wang Ting Zhou Huimin Xiang Canglong Wang Fan Yang Yiqun Deng Heng Chen |
| author_sort | Mengtong Ma |
| collection | DOAJ |
| description | Selective emitters are crucial as the key component determining the energy conversion efficiency of radioisotope thermophotovoltaic (RTPV) systems. Developing selective emitter materials with high selective emissivity, high spectral efficiency and excellent high-temperature stability can effectively improve the energy conversion efficiency and service life of RTPV systems. To adjust the selective emissivity and spectral efficiency, a series of rare earth tantalate selective emitters (Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2)) matching GaSb batteries were prepared by high-temperature solid-state reaction and pressureless sintering method. The as-prepared Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) ceramics exhibit high emissivity (49%–93%) in the selective band (1.40–1.60 μm), high spectral efficiency (59.46%–62.12%) and excellent high-temperature stability at 1400 °C. On one hand, doping Nb5+ into the B-site changes the crystal local structure symmetry around Er3+, which promotes the f–f transition of Er3+ and enhances the selective emission performance. On the other hand, doping Nb5+ ions into the B-site can alter the bandgap and oxygen vacancy concentration to suppress non-selective emissivity. Increasing the selective emissivity and reducing the non-selective emissivity is beneficial for improving the spectral efficiency of selective emitters. Hence, the selective emissivity and spectral efficiency of Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) can be effectively enhanced through compositional design, providing a new strategy for developing selective emitter materials for RTPV applications. |
| format | Article |
| id | doaj-art-16d89d379a7842e1b28c411ac836beff |
| institution | Kabale University |
| issn | 2226-4108 2227-8508 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj-art-16d89d379a7842e1b28c411ac836beff2025-08-20T03:29:31ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082025-05-01145922107210.26599/JAC.2025.9221072A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performanceMengtong Ma0Minzhong Huang1Liyan Xue2Kaixian Wang3Ting Zhou4Huimin Xiang5Canglong Wang6Fan Yang7Yiqun Deng8Heng Chen9School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaFujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy System, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaFujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy System, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaFujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy System, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaFujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy System, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaAdvanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, ChinaFujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy System, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaCollege of Rare Earths, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaState Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaSelective emitters are crucial as the key component determining the energy conversion efficiency of radioisotope thermophotovoltaic (RTPV) systems. Developing selective emitter materials with high selective emissivity, high spectral efficiency and excellent high-temperature stability can effectively improve the energy conversion efficiency and service life of RTPV systems. To adjust the selective emissivity and spectral efficiency, a series of rare earth tantalate selective emitters (Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2)) matching GaSb batteries were prepared by high-temperature solid-state reaction and pressureless sintering method. The as-prepared Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) ceramics exhibit high emissivity (49%–93%) in the selective band (1.40–1.60 μm), high spectral efficiency (59.46%–62.12%) and excellent high-temperature stability at 1400 °C. On one hand, doping Nb5+ into the B-site changes the crystal local structure symmetry around Er3+, which promotes the f–f transition of Er3+ and enhances the selective emission performance. On the other hand, doping Nb5+ ions into the B-site can alter the bandgap and oxygen vacancy concentration to suppress non-selective emissivity. Increasing the selective emissivity and reducing the non-selective emissivity is beneficial for improving the spectral efficiency of selective emitters. Hence, the selective emissivity and spectral efficiency of Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) can be effectively enhanced through compositional design, providing a new strategy for developing selective emitter materials for RTPV applications.https://www.sciopen.com/article/10.26599/JAC.2025.9221072radioisotope thermophotovoltaic systemsselective emittershigh selective emissivityhigh spectral efficiencyhigh-temperature stability |
| spellingShingle | Mengtong Ma Minzhong Huang Liyan Xue Kaixian Wang Ting Zhou Huimin Xiang Canglong Wang Fan Yang Yiqun Deng Heng Chen A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performance Journal of Advanced Ceramics radioisotope thermophotovoltaic systems selective emitters high selective emissivity high spectral efficiency high-temperature stability |
| title | A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performance |
| title_full | A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performance |
| title_fullStr | A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performance |
| title_full_unstemmed | A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performance |
| title_short | A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performance |
| title_sort | potential thermophotovoltaic emitter er ta1 xnbx o4 0 ≤ x ≤ 0 2 with excellent selective emission performance |
| topic | radioisotope thermophotovoltaic systems selective emitters high selective emissivity high spectral efficiency high-temperature stability |
| url | https://www.sciopen.com/article/10.26599/JAC.2025.9221072 |
| work_keys_str_mv | AT mengtongma apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT minzhonghuang apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT liyanxue apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT kaixianwang apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT tingzhou apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT huiminxiang apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT canglongwang apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT fanyang apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT yiqundeng apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT hengchen apotentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT mengtongma potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT minzhonghuang potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT liyanxue potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT kaixianwang potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT tingzhou potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT huiminxiang potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT canglongwang potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT fanyang potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT yiqundeng potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance AT hengchen potentialthermophotovoltaicemittererta1xnbxo40x02withexcellentselectiveemissionperformance |