Effects of Hole-Collecting Buffer Layers and Electrodes on the Performance of Flexible Plastic Organic Photovoltaics

Table 1

Summary of device parameters for organic photovoltaic devices with four different ITO substrates (glass and flexible plastics) and two different buffer layers (AI4083 and PH500).

Substrate	PEDOT : PSS	𝑉OC (V)		𝐽SC (mA/cm^2)		FF		PCE (%)		𝑅𝑆 (Ω cm^2)^a
Glass/ITO	AI4083; PH500	0.61; 0.61	(1.00)^b	6.20; 6.50	(1.05)^b	0.605; 0.609	(1.01)^b	2.30; 2.43	(1.06)^b	9.0; 8.1	(1.11)^b
PEN/ITO	AI4083; PH500	0.60; 0.60	(1.00)^b	3.68; 6.44	(1.75)^b	0.464; 0.440	(0.95)^b	1.02; 1.69	(1.66)^b	12.0; 10.1	(1.19)^b
PES/ITO	AI4083; PH500	0.61; 0.60	(0.98)^b	2.07; 4.06	(1.96)^b	0.159; 0.289	(1.82)^b	0.20; 0.70	(3.50)^b	159.7; 123.9	(1.29)^b
PET/ITO	AI4083; PH500	0.58; 0.60	(1.03)^b	0.50; 2.23	(4.46)^b	0.139; 0.193	(1.39)^b	0.04; 0.26	(6.50)^b	708.8; 166.8	(4.25)^b
Glass/PH500 (ITO-free)		0.61		3.98		0.364		0.88		90.5

^a𝑅_𝑆 is calculated from the inverse slope of 𝐽-𝑉 curve at high cell voltages (𝐽=0). ^bThe numbers in parentheses denote the ratio of PH500 to AI4083 (for 𝑉_OC, 𝐽_SC, FF, and PCE) or the ratio of AI4083 to PH500 (for 𝑅_𝑆).