Simple solution-processed CuOX as anode buffer layer for efficient organic solar cells

Synthesis of Highly Monodisperse Cu2O Nanocrystals and Their Applications as Hole‐Transporting Layers in Solution‐Processed Light‐Emitting Diodes

“…Two routes, namely the precursor route and the nanocrystal route, have been developed. The precursor route involves coating of soluble metal precursors, followed by in situ treatment to convert the precursors into oxide films . The nanocrystal route consists of directly depositing colloidal Cu x O particles into thin films .…”

“…We chose a typical PLED structure {ITO/HTL/poly[2‐methoxy‐5‐(2‐ethylhexyloxy)‐1,4‐phenylenevinylene](MEH‐PPV)/Ca/Ag}. An energy band level diagram of the PLED structure is displayed in Figure S7 (Supporting Information) . The current density/luminance–voltage and external quantum efficiency (EQE)–voltage curves of a typical Cu x O‐based device are shown in Figure d and e, respectively.…”

“…The precursor route involves coating of solublem etal precursors, followed by in situ treatment to convert the precursors into oxide films. [15][16][17] The nanocrystal routec onsists of directly depositing colloidal Cu x O particles into thin films. [18,19] The nanocrystal route decouples crystallization of oxidesf rom film-formation process, which offersm ore freedom in removing by-products, regulating surface properties and controlling film-formation temperature.…”

“…We chose at ypical PLED structure {ITO/HTL/poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene](MEH-PPV)/Ca/Ag}.A n energy band level diagram of the PLED structure is displayed in Figure S7 (Supporting Information). [15,30] The current density/ luminance-voltage and externalq uantum efficiency (EQE)voltage curves of at ypical Cu x O-based device are shown in Figure 3d and 3e,r espectively.T he device exhibits ap eak luminance (L max )o f7 779 cd m À2 at 8V ,amaximum EQE of 0.92 %, and turn-onv oltage (V on )o f2 .3 V. The overall performance of the Cu x O-based devices is comparable to that of the PEDOT:PSS-based devices (Table S1, Supporting Information). Furthermore, the low processing temperature (130 8C) of the Cu x OH TL offers ap romising path to flexible electronics.…”

Hybrid ZnO Electron Transport Layer by Down Conversion Complexes for Dual Improvements of Photovoltaic and Stable Performances in Polymer Solar Cells

“…Polymer solar cells (PSCs) have attracted much attention owing to their advantages in making large-area flexible solar panels using low-cost solution coating techniques [1][2][3][4][5]. Recent research works have been conducted to improve the power conversion efficiency (PCE) of PSCs by the development of novel structure donor and acceptor materials.…”