Ghosh, RaptiRaptiGhoshKang, Yi SunYi SunKangYadav, KanchanKanchanYadavLin, Hung I.Hung I.LinYen, Zhi LongZhi LongYenLin, Hsia YuHsia YuLinLu, Guan ZhangGuan ZhangLuSankar, RamanRamanSankarHsieh, Ya PingYa PingHsiehMario HofmannYANG-FANG CHEN2023-07-172023-07-172022-11-222637-6113https://scholars.lib.ntu.edu.tw/handle/123456789/633848Roll-up technology provides a feasible approach to transform patterned planar membranes into three-dimensional (3D) tubular microstructures. The tubular geometry enables the confinement of the local electromagnetic field and strengthens the photon-matter interaction inside the structure. By applying the roll-up method, we fabricated 3D tubular photodetectors from graphene/quantum dots (QDs) embedded polymer membranes around an optical fiber. These fabricated tubular photodetectors exhibit 5 times higher photoresponsivity compared to their planar counterparts. The enhanced responsivity is related to the light-trapping effect of the tubular structure as verified by the finite-difference time-domain (FDTD) simulation. 3D tubular photodetectors can detect photons accurately over a wide incidence angle (0-360°) without the responsivity decline. This unprecedented feature suppresses all published reports and lifts the restriction of the limited measured angle in conventional photodetectors. The omnidirectional and highly sensitive tubular QDs/2D-based devices, opening a route toward future optoelectronic devices from imaging to tracking solar cells.2D-0D | flexible | graphene | omnidirectional | photodetector | ReS QD 2 | tubular[SDGs]SDG7journal article10.1021/acsaelm.2c008712-s2.0-85141504418https://api.elsevier.com/content/abstract/scopus_id/85141504418