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Efficient electron injection from solution-processed cesium stearate interlayers in organic light-emitting diodes
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The electron-injection capability of solution-processed cesium stearate films in organic light-emitting diodes is investigated. Cesium stearate, which is expected to exhibit good solubility and film formation due to its long hydrocarbon chain, is synthesized using a straightforward procedure. Light-emitting diodes are fabricated using orange-, yellow-, and blue-emitting conjugated polymers, comprising a cesium stearate electron-injection layer deposited from ethanol solution. It is demonstrated that these devices perform as well as benchmark devices using vacuum-deposited barium as electron-injection layer, without loss of color purity.


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Scitation: Efficient electron injection from solution-processed cesium stearate interlayers in organic light-emitting diodes