A Highly Conductive Conjugated Polyelectrolyte for Flexible Organic Thermoelectrics

Abstract

Organic thermoelectrics have attracted considerable attention owing to their remarkable advantages, including room-temperature power generation, skin-attachable/wearable applications with biocompatibility, and solution-based high-throughput fabrication. Selfdoped conjugated polyelectrolytes (CPEs) constitute a promising class of conductive organic materials that are considered potential candidates for organic thermoelectrics.

Protonation-Induced Charge Transfer and Polaron Formation in Organic Semiconductors Doped by Lewis Acids

“…Recent measurements on a related polymer, PCPDT-BT-SO 3 K, which can be protonated by H 2 O, show similar results. 12,13 Detailed insights into the effect of Brønsted-type acid complex formation of BCF on the doping of P3HT were obtained identifying the complex formation as the driving factor of polaron formation, confirming the proposed mechanism. 14 Theoretical investigations on the protonation pathway propose that a BCF:HOcounter anion energetically disfavor the protonation of PCPDT-BT, but formation of a [BCF:HO:BCF]or [BCF:HO:H 2 O:BCF]counter anion open an exergonic pathway and thus favors the protonation.…”

Thermal Management Systems and Waste Heat Recycling by Thermoelectric Generators—An Overview

“…Figure 6 provides some examples of the recent applications of thermoelectric generators. According to this figure [16][17][18][19][20][21][22][23][24], the exploration of new TE materials has extended the application of the TEGs from low-temperature range, such as room temperature for capturing human body heat [18,20], to medium temperature for recovering car exhaust heat [21], and then they have been functionalized at high temperatures for NASA emissions to empower discovery rovers [23,24]. Recent decades: 21st century: (a) self-doped conjugated polyelectrolytes (CPEs) has been evaluated as a promising class of conductive organic for organic thermoelectrics (adapted from [16] with permission), (b) photograph of a prototype for a compact and flexible TEG (CF-TEG) using ultra-fine chip mounting technique.…”

“…Figure 6. Recent decades: 21st century: (a) self-doped conjugated polyelectrolytes (CPEs) has been evaluated as a promising class of conductive organic for organic thermoelectrics (adapted from[16] with permission), (b) photograph of a prototype for a compact and flexible TEG (CF-TEG) using ultra-fine chip mounting technique. It is made of 84 p-n pairs fabricated on a 10 × 10 mm 2 flexible substrate.…”

Advances in environmentally-friendly organic thermoelectric and organic thin-film transistor materials

“…为解决这一问题, 他们使用透析装置去除 胶体中多余的表面活性剂, 系统探究了透析时间对水 负载PBTTT材料热电性能的影响(图8k). 实验结果表 图 8 (a) poly(Ni-ett)、PEDOT、PCPDTBT-KSO 3 与PBTTT-C 14 分子结构式; (b) 电化学沉积制备的poly(Ni-ett)薄膜 [76] ; poly (Ni-ett)发电器件的(c)照片和(d)I-V曲线 [69] ; (e) "类悬浮器件"帕尔贴制冷示意图 [70] ; (f) PEDOT:PSS成膜前后添加乙二醇对其 结晶性的影响示意图 [78] ; 硫酸处理前后PCPDTBT-SO 3 K薄膜的(g)功率因子和(h)ZT与温度依赖关系; (i) 基于PCPDTBT-SO 3 K 的热电结构示意图和照片; (j) 基于PCPDTBT-SO 3 K的柔性器件照片 [80] ; (k) 水溶性PBTTT-C 14 的热电性能-透析时间关系图 [79] (网络版彩图) Figure 9 The key strategies and objectves of environmentallyfriendly OTE and OTFT devices (color online).…”

“…Figure 8 (a) Molecule structures of poly(Ni-ett)、PEDOT、PCPDTBT-KSO 3 与PBTTT-C 14 ; (b) poly(Ni-ett) thin films prepared by electrochemical deposition [76]; (c) photograph of the organic thermoelectric generator with 108 poly(Ni-ett) legs on a flexible substrate; (d) I-V curve of the device under a temperature difference of 12 K[69]; (e) schematic of the Peltier effect and other involved thermal processes in a thin-film OTE device[70]; (f) schematic of the kinetic processes during film formation of PEDOT:PSS with/without ethylene glycol[78]; temperature dependence of (g) power factor and (h) ZT value of the pristine PCPDTBT-SO 3 K and the H 2 SO 4 -treated films; (i) schematic and photograph of the organic thermoelectric generator based on PCPDTBT-SO 3 K; (j) photograph of the flexible organic thermoelectric generator loaded on a bending machine[80]; (k) thermoelectric performances of water-borne colloid-based devices with different dialysis time[79] (color online).…”