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The insertion of thin MnO layer between organic photoactive layer and metal electrode significantly improved the power conversion efficiency (PCE) and the air stability of organic photovoltaic cell (OPV). PCE (2.91%) was obtained by inserting 3-nm-thick MnO, higher than 0.91% for the device without MnO, and 2.59% for the device with 0.5-nm-thick LiF. In addition, the PCE of MnO device retained 28...
An insulator MnO as an electron injecting and transporting material introduced into organic light-emitting diodes to increase electroluminescence efficiency also can eliminate the problem of the oxidation of reactive dopants to improve stability of devices.
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