[1] [1] HU Z Y, ZHANG J J, ZHU Y J. Effects of solvent-treated PEDOT∶PSS on organic photovoltaic devices［J］. Renewable Energy, 2014, 62: 100-105.

[2] [2] WANG C H, ZHANG C J, TONG S C, et al. Energy level and thickness control on PEDOT∶PSS layer for efficient planar heterojunction perovskite cells［J］. Journal of Physics D: Applied Physics, 2018, 51(2): 025110.

[3] [3] PARK S, CHA M J, SEO J H, et al. Treating the poly(3, 4-ethylenedioxythiophene): poly(styrenesulfonate) surface with hydroquinone enhances the performance of polymer solar cells［J］. ACS Applied Materials & Interfaces, 2018, 10(48): 41578-41585.

[4] [4] ELSCHNER A, LVENICH W. Solution-deposited PEDOT for transparent conductive applications［J］. MRS Bulletin, 2011, 36(10): 794-798.

[5] [5] LEE I, KIM G W, YANG M Y, et al. Simultaneously enhancing the cohesion and electrical conductivity of PEDOT∶PSS conductive polymer films using DMSO additives［J］. ACS Applied Materials & Interfaces, 2016, 8(1): 302-310.

[6] [6] LINGSTEDT L V, GHITTORELLI M, LU H, et al. Effect of DMSO solvent treatments on the performance of PEDOT∶PSS based organic electrochemical transistors［J］. Advanced Electronic Materials, 2019, 5(3): 1800804.

[7] [7] HWANG K H, KIM D I, NAM S H, et al. Study on the effect of DMSO on the changes in the conductivity of PEDOT∶PSS［J］. Functional Materials Letters, 2018, 11(5): 1850043.

[8] [8] OUYANG J Y, XU Q F, CHU C W, et al. On the mechanism of conductivity enhancement in poly(3, 4-ethylenedioxythiophene): poly(styrene sulfonate) film through solvent treatment［J］. Polymer, 2004, 45(25): 8443-8450.

[9] [9] LIN Y J, NI W S, LEE J Y. Effect of incorporation of ethylene glycol into PEDOT∶PSS on electron phonon coupling and conductivity［J］. Journal of Applied Physics, 2015, 117(21): 215501.

[10] [10] HWANG J S, OH T H, KIM S H, et al. Effect of solvent on electrical conductivity and gas sensitivity of PEDOT∶PSS polymer composite films［J］. Journal of Applied Polymer Science, 2015, 132(40): 42628.

[11] [11] MEEN T H, CHEN K L, CHEN Y H, et al. The effects of dilute sulfuric acid on sheet resistance and transmittance in poly(3, 4-thylenedioxythiophene): poly(styrenesulfonate) films［J］. International Journal of Photoenergy, 2013, 2013: 1-6.

[12] [12] KIM J, JANG J G, HONG J I, et al. Sulfuric acid vapor treatment for enhancing the thermoelectric properties of PEDOT∶PSS thin-films［J］. Journal of Materials Science: Materials in Electronics, 2016, 27(6): 6122-6127.

[13] [13] MOHD SAID S, RAHMAN S M, LONG B D, et al. The effect of nitric acid (HNO3) treatment on the electrical conductivity and stability of poly(3, 4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT∶PSS) thin films［J］. Journal of Polymer Engineering, 2017, 37(2): 163-168.

[14] [14] LI J, ZHANG H, LIU J C, et al. Investigation of the effects of alkaline treatment on the properties of poly(3, 4-ethylenedioxythiophene): poly(4-styrenesulfonate) films［J］. Asian Journal of Chemistry, 2013, 25(2): 1107-1110.

[15] [15] BIEMANN L, SAXENA N, HOHN N, et al. Highly conducting, transparent PEDOT∶PSS polymer electrodes from post-treatment with weak and strong acids［J］. Advanced Electronic Materials, 2019, 5(2): 1800654.

[16] [16] YUN D J, JUNG J, SUNG Y M, et al. In-situ photoelectron spectroscopy study on the air degradation of PEDOT∶PSS in terms of electrical and thermoelectric properties［J］. Advanced Electronic Materials, 2020, 6(11): 2000620.

[17] [17] SCHULTHEISS A, GUEYE M, CARELLA A, et al. Insight into the degradation mechanisms of highly conductive poly(3, 4-ethylenedioxythiophene) thin films［J］. ACS Applied Polymer Materials, 2020, 2(7): 2686-2695.

[18] [18] SHI Y B, ZHOU Y Q, SHEN R Z, et al. Solution-based synthesis of PEDOT∶PSS films with electrical conductivity over 6 300 S/cm［J］. Journal of Industrial and Engineering Chemistry, 2021, 101: 414-422.

[19] [19] XIA Y J, SUN K, OUYANG J Y. Solution-processed metallic conducting polymer films as transparent electrode of optoelectronic devices［J］. Advanced Materials, 2012, 24(18): 2436-2440.

[20] [20] KIM N, KEE S, LEE S H, et al. Highly conductive PEDOT∶PSS nanofibrils induced by solution-processed crystallization［J］. Advanced Materials, 2014, 26(14): 2268-2272.

[21] [21] ZOZOULENKO I, SINGH A, SINGH S K, et al. Polarons, bipolarons, and absorption spectroscopy of PEDOT［J］. ACS Applied Polymer Materials, 2019, 1(1): 83-94.

[22] [22] MASSONNET N, CARELLA A, JAUDOUIN O, et al. Improvement of the Seebeck coefficient of PEDOT∶PSS by chemical reduction combined with a novel method for its transfer using free-standing thin films［J］. J Mater Chem C, 2014, 2(7): 1278-1283.

[23] [23] IMAE I, OGINO R, TSUBOI Y, et al. Synthesis of EDOT-containing polythiophenes and their properties in relation to the composition ratio of EDOT［J］. RSC Advances, 2015, 5(103): 84694-84702.

[24] [24] CRISPIN D X. Retracted article: towards polymer-based organic thermoelectric generators［J］. Energy & Environmental Science, 2012. DOI:10.1039/c2ee23401 g.

[25] [25] MARCINIAK S, CRISPIN X, UVDAL K, et al. Light induced damage in poly(3, 4-ethylenedioxythiophene) and its derivatives studied by photoelectron spectroscopy［J］. Synthetic Metals, 2004, 141(1/2): 67-73.