Flexible Photodetector Arrays Based on Patterned CH3NH3PbI3−xClx Perovskite Film for Real‐Time Photosensing and Imaging,Advanced Materials

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Flexible Photodetector Arrays Based on Patterned CH3NH3PbI3−xClx Perovskite Film for Real‐Time Photosensing and Imaging
Advanced Materials ( IF 27.4 ) Pub Date : 2018-11-28 , DOI: 10.1002/adma.201805913
Wenqiang Wu _{1,

2} , Xiandi Wang _{1,

3} , Xun Han ₁ , Zheng Yang ₁ , Guoyun Gao ₁ , Yufei Zhang ₁ , Jufang Hu ₁ , Yongwen Tan ₄ , Anlian Pan ₂ , Caofeng Pan _{1,

3,

5,

6}

Affiliation

The quest for novel deformable image sensors with outstanding optoelectronic properties and large‐scale integration becomes a great impetus to exploit more advanced flexible photodetector (PD) arrays. Here, 10 × 10 flexible PD arrays with a resolution of 63.5 dpi are demonstrated based on as‐prepared perovskite arrays for photosensing and imaging. Large‐scale growth controllable CH₃NH₃PbI₃₋_xCl_x arrays are synthesized on a poly(ethylene terephthalate) substrate by using a two‐step sequential deposition method with the developed Al₂O₃‐assisted hydrophilic–hydrophobic surface treatment process. The flexible PD arrays with high detectivity (9.4 × 10¹¹ Jones), large on/off current ratio (up to 1.2 × 10³), and broad spectral response exhibit excellent electrical stability under large bending angle (θ = 150°) and superior folding endurance after hundreds of bending cycles. In addition, the device can execute the functions of capturing a real‐time light trajectory and detecting a multipoint light distribution, indicating that it has widespread potential in photosensing and imaging for optical communication, digital display, and artificial electronic skin applications.

中文翻译：

基于图案化的CH3NH3PbI3-xClx钙钛矿膜的柔性光电探测器阵列，用于实时光敏和成像

对具有出色光电性能和大规模集成的新型可变形图像传感器的追求，成为开发更先进的柔性光电探测器（PD）阵列的强大动力。在此，基于用于光敏和成像的钙钛矿阵列，演示了分辨率为63.5 dpi的10×10柔性PD阵列。利用已开发的Al ₂ O ₃辅助亲水-疏水表面处理工艺，采用两步顺序沉积法，在聚对苯二甲酸乙二醇酯基底上合成了可大规模控制生长的CH ₃ NH ₃ PbI ₃₋_x Cl _x阵列。具有高探测灵敏度的柔性PD阵列（9.4×10 ¹¹琼斯（Jones），大的开/关电流比（高达1.2×10 ³）和宽的光谱响应在大的弯曲角度（θ= 150°）下表现出优异的电稳定性，并且经过数百次弯曲循环后具有出色的耐折性。此外，该设备还可以执行捕获实时光轨迹和检测多点光分布的功能，这表明该设备在光传感和成像方面具有广阔的潜力，可用于光通信，数字显示和人造电子皮肤应用。

更新日期：2018-11-28

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