Transparent and flexible thermoelectrics has been highly sought after for future wearable devices. However, the main stumbling block to prevent its widespread adoption is the lack of p-type transparent thermoelectrics and the stringent criteria of electrical and thermal properties matching appropriately between p-legs and n-legs. This work demonstrates the fabrication of p-type PEDOT:PSS films whose optical properties, electrical conductivity, thermal conductivity, and Seebeck coefficient were engineered to perfectly match the n-type indium tin oxide (ITO) counterparts. The dense p-type PEDOT:PSS and n-type ITO thin films show a thermoelectric figure of merit of zT = 0.30 and 0.29 at 450 K, and a thermal conductivity of 0.22 and 0.32 W m⁻¹ K⁻¹, respectively. A flexible thermoelectric generator (TEG) module with a high transmittance of >81% in the visible wavelength range of 400–800 nm is fabricated using 10 pairs of p-type PEDOT:PSS and n-type ITO thin film legs. An ultra-high power density of 22.2 W m⁻² at a temperature gradient of 80 K was observed, which is the highest power density reported for organic/hybrid-based flexible TEGs so far. Our transparent flexible thin-film p–n junction thermoelectric module with exceptionally high power generation may take a tremendous step forward towards multi-functional wearable devices.

透明且柔性的热电器件已成为未来可穿戴设备的强烈追求。然而，阻止其广泛采用的主要绊脚石是缺乏p型透明热电器件，以及在p型脚和n型脚之间适当匹配的电学和热学性质的严格标准。这项工作演示了p型PEDOT：PSS膜的制造，该膜的光学性能，电导率，导热率和塞贝克系数经过精心设计，可完美匹配n型铟锡氧化物（ITO）。密集的p型PEDOT：PSS和n型ITO薄膜在450K下的热电品质因数分别为zT  ＝ 0.30和0.29，热导率分别为0.22和0.32W m ^-1  K ^-1。使用10对p型PEDOT：PSS和n型ITO薄膜支脚制造了一种柔性热电发生器（TEG）模块，该模块在400-800 nm的可见光波长范围内具有> 81％的高透射率。在80 K的温度梯度下观察到22.2 W m ^-2的超高功率密度，这是迄今为止报道的基于有机/杂化的柔性TEG的最高功率密度。我们的透明柔性薄膜PN 具有超高发电量的结型热电模块可能会朝着多功能可穿戴设备迈出一大步。