A perovskite based plug and play AC photovoltaic device with ionic liquid induced transient opto-electronic conversion
A perovskite based plug and play AC photovoltaic device with ionic liquid induced transient opto-electronic conversion
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DOI：
10.1039/c6ta01427e
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发表时间：
2016-06
影响因子：
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通讯作者：
S. Karak;Chihiro Nanjo;M. Odaka;K. Yuyama;G. Masuda;M. Matsushita;K. Awaga
中科院分区：
文献类型：
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作者：
S. Karak;Chihiro Nanjo;M. Odaka;K. Yuyama;G. Masuda;M. Matsushita;K. Awaga
本研究报告了在钙钛矿/离子液体界面处与诱导双电层（EDLs）相关的能量收集的瞬态光电转换的实施。采用氧化铟锡（ITO）/聚（3，4-乙撑二氧噻吩）聚苯乙烯磺酸盐（PEDOT：PSS）/钙钛矿（CH_3 NH_3 PbI_3）/[6，6]-苯基-C_（61）-丁酸甲酯（PCBM）/离子液体/铝（Al）的器件结构，成功制备了高速交流（AC）光伏器件。在整个可见光太阳光谱范围内，观测到52%的峰值外量子效率，最大响应率为228 mA W−1，响应相对均匀。这种新型器件可以响应于脉冲信号在光“开”和“关”周期下产生光电流。这种独特的功能使它们在调制太阳辐射下照射时本质上能够产生交流电。该器件的大线性动态范围（> 90 dB）证实了其高效的功率转换能力，即使在非常低强度的光源下也是如此。在50 Hz调制频率下，还成功实现了总有效交流功率转换效率为0.2%的光伏器件，在160 Hz调制频率后，该效率进一步提高并在0.3%左右饱和。根据器件的能带图和等效电阻（R）-电容（C）电路解释了交流效应的形成机理。
This study reports on the implementation of transient opto-electronic conversion for energy harvesting associated with induced electric double layers (EDLs) at perovskite/ionic liquid interfaces. High speed alternating current (AC) producing photovoltaic devices are successfully fabricated and demonstrated with a device architecture as indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)/perovskite (CH3NH3PbI3)/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM)/ionic liquid/aluminum (Al). 52% peak external quantum efficiency with a maximum responsivity of 228 mA W−1 has been observed with a relatively uniform response over the whole visible solar spectrum. Such a new class of devices can produce photocurrent under both light “ON” and “OFF” cycles in response to a pulsed signal. This unique feature makes them inherently capable of producing AC power when illuminated under modulated solar radiation. The large (∼90 dB) linear dynamic range (LDR) of the devices confirms their efficient power conversion capabilities even from very low intensity light sources. At 50 Hz modulation frequency, a photovoltaic device with ∼2% overall effective AC power conversion efficiency, which further increases and gets saturated around ∼3% beyond 160 Hz modulation frequency, is also successfully realized. The mechanism of the AC effect formation is explained based on the energy band diagram and an equivalent resistance (R)–capacitance (C) circuit of the devices.