Scholarlink

<p>Conventional thermoelectric materials are limited by rigidity, high synthesis costs, and poor compatibility with flexible devices. Despite progress, the development of novel, low-cost, and scalable materials for flexible thermoelectrics remains limited. The novelty of this work lies in introducing InTe as a printable thermoelectric material and demonstrating the first screen-printed flexible thermoelectric generators (FTEGs) based on InTe. Pristine and Bi/Se co-doped InTe were synthesised via solid-state reaction and fabricated through a cost-effective, scalable screen-printing method. Co-doping effectively tuned the crystallinity, carrier concentration, mobility, and band structure. Among the co-doped samples, In<sub>0.94</sub>Bi<sub>0.06</sub>Te<sub>0.97</sub>Se<sub>0.03</sub> achieved a Seebeck coefficient of ~ 1320 µV/K and showed a maximum power output of ~ 29.45 nW at a temperature gradient of 100&#xa0;K. The other novelty of this work is the incorporation of MnO₂ to form a printed p–n heterojunction, which improves the conductive pathway, leading to a peak power output of 48.41 nW, approximately 1.64 times higher than that of the In<sub>0.94</sub>Bi<sub>0.06</sub>Te<sub>0.97</sub>Se<sub>0.03</sub> sample. The FTEGs exhibited approximately 2% resistance variation after 500 bending cycles and at various angles, confirming excellent mechanical durability. This work establishes InTe as a promising printable thermoelectric material and highlights co-doping and MnO<sub>2</sub> incorporation as powerful strategies for flexible energy harvesting.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Unveiling InTe for flexible thermoelectric applications with enhanced performance via Bi/Se co-doping and MnO₂ integration

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月17日

查看全文
  • Manasa R Shankar,
  • A. N. Prabhu,
  • Ramakrishna Nayak

摘要

Conventional thermoelectric materials are limited by rigidity, high synthesis costs, and poor compatibility with flexible devices. Despite progress, the development of novel, low-cost, and scalable materials for flexible thermoelectrics remains limited. The novelty of this work lies in introducing InTe as a printable thermoelectric material and demonstrating the first screen-printed flexible thermoelectric generators (FTEGs) based on InTe. Pristine and Bi/Se co-doped InTe were synthesised via solid-state reaction and fabricated through a cost-effective, scalable screen-printing method. Co-doping effectively tuned the crystallinity, carrier concentration, mobility, and band structure. Among the co-doped samples, In0.94Bi0.06Te0.97Se0.03 achieved a Seebeck coefficient of ~ 1320 µV/K and showed a maximum power output of ~ 29.45 nW at a temperature gradient of 100 K. The other novelty of this work is the incorporation of MnO₂ to form a printed p–n heterojunction, which improves the conductive pathway, leading to a peak power output of 48.41 nW, approximately 1.64 times higher than that of the In0.94Bi0.06Te0.97Se0.03 sample. The FTEGs exhibited approximately 2% resistance variation after 500 bending cycles and at various angles, confirming excellent mechanical durability. This work establishes InTe as a promising printable thermoelectric material and highlights co-doping and MnO2 incorporation as powerful strategies for flexible energy harvesting.