具太陽光發射光譜和超高性能之可撓式石墨烯/金屬有機骨架/石墨烯/聚偏二氟乙烯異質接面光電晶體

Abstract

隨著科技技術的發展，我們越發需要多功能且高性能的元件，以滿足可穿戴電子設備、顯示器、太空科技和數據通信的需求。藉著結合石墨烯和金屬有機骨架（MOFs）的特性，我們設計了一種輕巧、結構簡單、可撓且具有雙重功能的垂直型光電晶體。這個單一元件，能發出近似太陽光譜的白光也呈現高光電探測性，包括外部量子效率 >3 × 10^8%和 ~10^8 安培/瓦特的光響應度並 ~220 微秒的反應速度。此外，我們的實驗顯示出這個元件有自供電光檢測力且光電流能在不同應變下變化。我們的元件具有可撓性、感測光和放光的雙重功能、且能發白光並具有高性能，相信對於下一代高性能光電元件的開發極有吸引力。

With the development of technology, there is a global demand for multifunctional and high-performance device to meet the need of wearable electronics, display, space technology, and data communication. By the intergration of unique properties of graphene and metal-organic frameworks (MOFs), here we demonstrate a light-weight, simple structural, flexible, and dual-functional vertical phototransistor. With this single device, we observe solar spectrum white light emission and high photodetectivity, including the external quantum efficiency >3 × 10^8%, a photoresponsivity of ~10^8 AW^-1, and a response time of ~220 μs. In addition, the self-powered photodetection and the variation of photocurrent under different strain are also demonstrated. With the characteristics including flexibility, dual-functionality, white light emission, and high performance, our device is extremely attractive for the development of next generation high-performance optoelectronic devices.