High-Performance Dispenser Printed MA p-Type Bi0.5Sb1.5Te3 Flexible Thermoelectric Generators for Powering Wireless Sensor Networks

Autor:	James Evans, Zuoqian Wang, Alic Chen, Paul K. Wright, Deepa Madan
Rok vydání:	2013
Předmět:	Thermoelectric generator Materials science business.industry Printed electronics Seebeck coefficient Composite number Optoelectronics General Materials Science Thermoelectric materials business Wireless sensor network Power density Power (physics)
Zdroj:	ACS Applied Materials & Interfaces. 5:11872-11876
ISSN:	1944-8252 1944-8244
DOI:	10.1021/am403568t
Popis:	This work presents a novel method to synthesize p-type composite thermoelectric materials to print scalable thermoelectric generator (TEG) devices in a cost-effective way. A maximum ZT of 0.2 was achieved for mechanically alloyed (MA) p-type Bi0.5Sb1.5Te3 (8 wt % extra Te additive)-epoxy composite films cured at 250 °C. A 50% increase in Seebeck coefficient as a result of adding 8 wt % extra Te in stoichiometric Bi0.5Sb1.5Te3 contributed to the increase in ZT. To demonstrate cost-effective and scalable manufacturing, we fabricated a sixty element thermoelectric generator prototype with 5.0 mm × 600 μm × 120 μm printed dimensions on a custom designed polyimide substrate with thick metal contacts. The prototype TEG device produced a power output of 20.5 μW at 0.15 mA and 130 mV for a temperature difference of 20 K resulting in a device areal power density of 152 μW/cm(2). This power is sufficient for low power applications such as wireless sensor network (WSN) devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::479dae94262c323933a1899f926dfec3 https://doi.org/10.1021/am403568t Zobrazit plný text záznamu