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High‐Performance Photovoltaic Effect with Electrically Balanced Charge Carriers in Black Phosphorus and WS2 Heterojunction
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-06-25 , DOI: 10.1002/admi.201800671 Do-Hyun Kwak 1 , Hyun-Soo Ra 1 , Min-Hye Jeong 1 , A-Young Lee 1 , Jong-Soo Lee 1
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-06-25 , DOI: 10.1002/admi.201800671 Do-Hyun Kwak 1 , Hyun-Soo Ra 1 , Min-Hye Jeong 1 , A-Young Lee 1 , Jong-Soo Lee 1
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2D van der Waals materials are promising for various electronic and optoelectronic devices because of their thickness‐dependent mobility and tunable bandgap. Recently, heterojunction structures based on 2D van der Waals materials have exhibited their potential for photovoltaic applications as ultrathin p–n diodes. In this study, the photovoltaic effect of a multilayer black phosphorus (BP)/WS2 p–n heterojunction device is demonstrated under the 405 nm laser illumination and the AM 1.5 solar spectrum. The diode‐like characteristics and photovoltaic effect rely on balance between charge carriers in the heterojunction device, by showing the highest performance at the balance position. The gate‐tunable heterojunction device shows a high current rectification of 103 and an external quantum efficiency of 4.4% under the 405 nm laser illumination, and a photovoltaic efficiency of 4.6% under the AM 1.5 solar spectrum. This work suggests that the balancing of the charge carriers in the 2D heterojunction p–n diode is highly prioritized to fabricate high‐performance photovoltaic device.
中文翻译：
黑色磷和WS2异质结中具有电平衡电荷载流子的高性能光伏效应
二维范德华材料因其厚度依赖性的迁移率和可调节的带隙而在各种电子和光电设备中具有广阔的前景。最近，基于二维范德华材料的异质结结构已显示出其作为超薄p-n二极管在光伏应用中的潜力。在这项研究中，在405 nm激光照射和AM 1.5太阳光谱下证明了多层黑磷（BP）/ WS 2 p–n异质结器件的光伏效应。类二极管的特性和光伏效应依赖于异质结器件中电荷载流子之间的平衡，从而在平衡位置显示出最高的性能。栅极可调的异质结器件显示出10 3的高电流整流在405 nm激光照射下的外部量子效率为4.4％，在AM 1.5太阳光谱下的光伏效率为4.6％。这项工作表明，二维异质结PN二极管中载流子的平衡被高度优先考虑，以制造出高性能的光伏器件。
更新日期：2018-06-25
中文翻译：
黑色磷和WS2异质结中具有电平衡电荷载流子的高性能光伏效应
二维范德华材料因其厚度依赖性的迁移率和可调节的带隙而在各种电子和光电设备中具有广阔的前景。最近，基于二维范德华材料的异质结结构已显示出其作为超薄p-n二极管在光伏应用中的潜力。在这项研究中，在405 nm激光照射和AM 1.5太阳光谱下证明了多层黑磷（BP）/ WS 2 p–n异质结器件的光伏效应。类二极管的特性和光伏效应依赖于异质结器件中电荷载流子之间的平衡，从而在平衡位置显示出最高的性能。栅极可调的异质结器件显示出10 3的高电流整流在405 nm激光照射下的外部量子效率为4.4％，在AM 1.5太阳光谱下的光伏效率为4.6％。这项工作表明，二维异质结PN二极管中载流子的平衡被高度优先考虑，以制造出高性能的光伏器件。
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