Spectra and Charge Transport of Polar Molecular Photoactive Layers Used for Solar Cells

Table 2

Energy levels of HOMO and LUMO and energy gaps of P1, P2, P3, and PBDT-BTA (Pb).

Molecules	Units	LUMO (eV)	HOMO (eV)	(eV)
P1				3.57
				2.82
				2.61
				2.11
P2				3.49
				2.79
				2.62
				2.16
P3				3.03
				2.67
				2.51
				2.26
Pb				2.68
				2.26
				2.11
				1.83