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. 2019 Dec 2;4(25):21178–21186. doi: 10.1021/acsomega.9b02613

Table 4. Water Contact Angle and Surface Energy of PDIH, PDIC, PDIN, and Active Layer.

structure contact angle (deg) surface energy (mN m–1)
ITO 75.5 40.40
ITO/ZnO 77 34.33
ITO/PDIH 81.5 30.10
ITO/PDIC 92.3 29.96
ITO/PDIN 92.5 35.23
ITO/P3HT:PC71BM 98 23.43
ITO/P3HT:PC71BM:PDIH 99 22.05
ITO/P3HT:PC71BM:PDIC 103 23.17