Publicação
Fully screen-printed thermoelectric generator from PbSe quantum dots
| Resumo: | Nanostructure engineering of thermoelectric (TE) materials has resulted in substantial development of TE devices over the last decades. Furthermore, an increasing demand for alternative energy sources that can power small electronic devices, such as sensors, has driven research on TE thin films. Although PbSe is commonly associated with high-temperature TE applications, in this work, the potential of this material near room temperature range is explored as a proof-of-concept. Therefore, a prototype of a fully screen-printed thermoelectric generator (TEG) with six pairs of legs was performed with PbSe quantum dots (QDs) thin films and Ag commercial ink contacts. Highly crystalline, morphologically and chemically uniform PbSe QDs were used to formulate the screenprintable ink. A maximum output power of 0.65 nW for ΔT = 45 K was obtained for PbSe QD-TEG with 2.5 cm leg length. Study of different leg lengths allowed to build a simulation model with COMSOL Multiphysics for PbSe QD-TEGs and confirmed the increase in device performance with increasing leg length. Although PbSe is commonly associated with high-temperature TE applications, in this work, the potential of this material near room temperature range is explored as a proof-of-concept. |
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| Autores principais: | Sousa, Viviana |
| Outros Autores: | Coelho, Rodrigo; Brito, Francisco P.; Alpuim, P.; Correia, J. H.; Salonen, Laura M.; Kovnir, Kirill; Kolen’ko, Yury V.; Gonçalves, António P.; Vieira, E. M. F |
| Assunto: | Lead selenide Quantum dots Screen printing Thermoelectric generato COMSOL multiphysics |
| Ano: | 2025 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | Nanostructure engineering of thermoelectric (TE) materials has resulted in substantial development of TE devices over the last decades. Furthermore, an increasing demand for alternative energy sources that can power small electronic devices, such as sensors, has driven research on TE thin films. Although PbSe is commonly associated with high-temperature TE applications, in this work, the potential of this material near room temperature range is explored as a proof-of-concept. Therefore, a prototype of a fully screen-printed thermoelectric generator (TEG) with six pairs of legs was performed with PbSe quantum dots (QDs) thin films and Ag commercial ink contacts. Highly crystalline, morphologically and chemically uniform PbSe QDs were used to formulate the screenprintable ink. A maximum output power of 0.65 nW for ΔT = 45 K was obtained for PbSe QD-TEG with 2.5 cm leg length. Study of different leg lengths allowed to build a simulation model with COMSOL Multiphysics for PbSe QD-TEGs and confirmed the increase in device performance with increasing leg length. Although PbSe is commonly associated with high-temperature TE applications, in this work, the potential of this material near room temperature range is explored as a proof-of-concept. |
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