Large-area transparent flexible guanidinium incorporated MAPbI3 microstructures for high-performance photodetectors with enhanced stability,Nanoscale Horizons

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Large-area transparent flexible guanidinium incorporated MAPbI3 microstructures for high-performance photodetectors with enhanced stability
Nanoscale Horizons ( IF 8.0 ) Pub Date : 2020-01-17 , DOI: 10.1039/c9nh00774a
Gundam Sandeep Kumar _{1,

2,

3,

4} , Piyush Kanti Sarkar _{1,

2,

3,

4} , Bapi Pradhan _{1,

2,

3,

4} , Mozakkar Hossain _{1,

2,

3,

4,

5} , K. D. M. Rao _{1,

2,

3,

4,

5} , Somobrata Acharya _{1,

2,

3,

4}

Affiliation

Unveiling the transparency and flexibility in perovskite-based photodetectors with superior photoresponse and environmental stability remains an open challenge. Here we report on guanidinium incorporated metal halide perovskite (MA_1−xGua_xPbI₃, x = 0 to 0.65) random percolative microstructure (RPM) fabrication using an ultra-fast spray coating technique. Remarkably, RPMs over a large area of 5 × 5 cm² on flexible substrates with a transparency of ∼50% can be achieved with enriched environmental stability. Transparent photodetectors based on MA_1−xGua_xPbI₃ (x = 0.12) RPMs manifest excellent performance with a responsivity of 187 A W⁻¹, a detectivity of 2.23 × 10¹² Jones and an external quantum efficiency of 44 115%. Additionally, the photodetectors exhibited superior mechanical flexibility under a wide range of bending angles and large number of binding cycles. Integrating features including transparency, high performance, stability, flexibility and scalability within a photodetector is unmatched and holds potential for novel applications in transparent and wearable optoelectronic devices.

中文翻译：

大面积透明柔性胍基结合的MAPbI3微结构，用于具有增强稳定性的高性能光电探测器

在具有出色的光响应和环境稳定性的钙钛矿基光电探测器中展现透明性和灵活性仍然是一个开放的挑战。在这里，我们报道了使用超快速喷涂技术制备的掺有胍盐的金属卤化物钙钛矿（MA _{1- x} Gua _x PbI ₃，x = 0至0.65）随机渗流微结构（RPM）的制备。值得注意的是，可以在柔性基板上以5×5 cm ²的大面积实现RPM，透明度约为50％，同时具有丰富的环境稳定性。基于MA _{1− x} Gua _x PbI ₃（x的透明光电探测器= 0.12）RPM以187 AW ^-1的响应度，2.23×10 ¹² Jones的探测度和44 115％的外部量子效率表现出卓越的性能。另外，光电检测器在大范围的弯曲角度和大量的结合循环下表现出优异的机械柔韧性。光电检测器内包括透明性，高性能，稳定性，灵活性和可伸缩性的集成功能是无与伦比的，并为透明和可穿戴光电设备中的新应用提供了潜力。

更新日期：2020-01-17

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