Crystalline Molybdenum Oxide Layers as Efficient and Stable Hole Contacts in Organic Photovoltaic Devices

Abstract

Crystalline molybdenum oxide layers as efficient and stable hole contacts in organic photovoltaic devices Ahmadpour, Mehrad; Cauduro, A. L. F.; Méthivier, C.; Kunert, B. ; Labanti, C.; Resel, R.; Engmann

Sputter-Deposited Titanium Oxide Layers as Efficient Electron Selective Contacts in Organic Photovoltaic Devices

“…Clearly, a strong correlation between the appearances of crystalline phases in the TiO x layers and the device performance is observed. Similar trends have recently been demonstrated for sputtered molybdenum oxide films, used as hole contacts in organic photovoltaic devices, and was attributed to modified work function and transport properties upon crystallization of the material [33][34][35][36] . The crystallization was shown to take place for super-oxidized metal oxide films, i.e.…”

“…The crystallization was shown to take place for super-oxidized metal oxide films, i.e. films that possess an excess amount of oxygen during the sputtering process 35,36 . For the TiO x films developed as OPV electron selective contacts in this work, the XRD peaks arise at the point where the devices start functioning, and close to where the s-shape characteristics disappear, namely for TiO x substrate temperatures of 100-155°C.…”

Recent advances in fiber-shaped and planar-shaped textile solar cells

“…Solar energy is a promising alternative to fossil fuels, since it is renewable, clean, ecofriendly, sustainable, abundant, and readily available. Hence, many research efforts have been invested on improving the performance, efficiency and stability of different types of emerging photovoltaics (PVs) such as dye sensitized, [1][2][3][4][5][6][7][8][9][10] organic, [11][12][13][14][15][16][17][18][19][20][21][22] and perovskite PVs. [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] While conventional silicon solar cells are heavy, fragile, and rigid, flexible solar cells represent a good alternative to the silicon counterparts, because of not only their flexibility, but also their lightweight, which enable their integration in portable electronic applications.…”

Dibenzo-tetraphenyl diindeno perylene as hole transport layer for high-bandgap perovskite solar cells

“…) is a known polyaromatic hydrocarbon-based compound that has favorable known electrochemical and photo-physical properties [25]. It has been reported as dopants for emitter in OLEDs, applications in electrogenerated chemiluminescence (ECL), and as a donor material in both bulk and bilayer heterojunction organic solar cell fabrication [26][27][28][29][30][31]. We have also reported DBP as an electron donor with C 70 as a bilayer in a planar heterojunction organic solar cell with a performance of 5.66% [32].…”