Enhanced performance in organic photovoltaic devices with a KMnO ₄ solution treated indium tin oxide anode modification

Abstract

Yang Qian-Qian(杨倩倩) a)b) , Zhao Su-Ling(赵谡玲) a)b) † , Xu Zheng(徐 征) a)b) , Zhang Fu-Jun(张福俊) a)b) , Yan Guang(闫 光) a)b) , Kong Chao(孔 超) a)b) , Fan Xing(樊 星) a)b) , Zhang Yan-Fei(张妍斐) a)b) , and Xu Xu-Rong(徐叙瑢) a)b)

Donor copolymer with benzo[1,2‐b:4,5‐b′]dithiophene and quinoxaline derivative segments for photovoltaic applications

“…However, much work is still required to effectively increase the J sc value of the PBDTThQx‐based OPVs. For example, we need to insert novel buffer layers into the device, optimize the annealing treatment, and modify the electrodes . Therefore, PBDTThQx will be a promising donor candidate for photovoltaic devices, and further improvement in PBDTThQx‐based OPVs can be foreseen.…”

Simulation study of the losses and influences of geminate and bimolecular recombination on the performances of bulk heterojunction organic solar cells

“…The larger the R sr , the less the voltage drop on the diode is, which results in a slower increase of J with V rising, accordingly the less "square" the J-V curve becomes. [30,31] Generally R sr is composed of (i) bulk resistance of the organic layer, (ii) bulk resistance of the electrodes, (iii) contact resistance of each interface in the device, and (iv) probe resistance. Since it is the numerical simulation here and the contacts of anode and cathode are Ohmic contacts, the resistances mentioned in items (ii)-(iv) are negligible.…”

Improved performance of P3HT:PCBM solar cells by both anode modification and short-wavelength energy utilization using Tb(aca)3phen

“…[9] To improve the active layer light harvesting capability, many researches exploring small band gap materials or combining different organic materials with complementary absorption spectra in one device have been carried out. [10][11][12][13][14] Various methods, such as solvent annealing, [15] additives, [16][17][18][19] thermal annealing, [20] and electrode modification, [21,22] have been empolyed to increase the power conversion efficiency (PCE). Buffer layers or ultrathin films, including PE-DOT:PSS, LiF, MoO 3 , WO 3 , V 2 O 5 , CsCO 3 , and TiO 2 , have been used to modify the electrodes to improve the device performance.…”