A photoionization detector comprising: an insulation spacer component comprising ultraviolet radiation shielding material; and a signal collection electrode component disposed on a first surface of the insulation spacer component and comprising a first electrode layer and a second electrode layer, wherein: the first electrode layer is disposed between the insulation spacer component and the second electrode layer, a second layer electrode width associated with the second electrode layer is smaller than a first layer electrode width associated with the first electrode layer, the first electrode layer defines a plurality of first electrode layer openings (135A, 135B), the first layer electrode width corresponds to a width of the first electrode layer between two of the plurality of first electrode layer openings (135A, 135B), the second electrode layer defines a plurality of second electrode layer openings (131A, 131B), the second layer electrode width corresponds to a width of the second electrode layer between two of the plurality of second electrode layer openings (131A, 131B), the photoionization detector being characterized in that: the insulation spacer component defines a plurality of insulation spacer openings (137A, 137B), an insulation spacer width corresponds to a width of the insulation spacer component between two of the plurality of insulation spacer openings (137A, 137B), and the insulation spacer width is larger than the first layer electrode width. an insulation spacer component comprising ultraviolet radiation shielding material; and a signal collection electrode component disposed on a first surface of the insulation spacer component and comprising a first electrode layer and a second electrode layer, wherein: the first electrode layer is disposed between the insulation spacer component and the second electrode layer, a second layer electrode width associated with the second electrode layer is smaller than a first layer electrode width associated with the first electrode layer, the first electrode layer defines a plurality of first electrode layer openings (135A, 135B), the first layer electrode width corresponds to a width of the first electrode layer between two of the plurality of first electrode layer openings (135A, 135B), the second electrode layer defines a plurality of second electrode layer openings (131A, 131B), the second layer electrode width corresponds to a width of the second electrode layer between two of the plurality of second electrode layer openings (131A, 131B), the photoionization detector being characterized in that: the insulation spacer component defines a plurality of insulation spacer openings (137A, 137B), an insulation spacer width corresponds to a width of the insulation spacer component between two of the plurality of insulation spacer openings (137A, 137B), and the insulation spacer width is larger than the first layer electrode width. the first electrode layer is disposed between the insulation spacer component and the second electrode layer, a second layer electrode width associated with the second electrode layer is smaller than a first layer electrode width associated with the first electrode layer, the first electrode layer defines a plurality of first electrode layer openings (135A, 135B), the first layer electrode width corresponds to a width of the first electrode layer between two of the plurality of first electrode layer openings (135A, 135B), the second electrode layer defines a plurality of second electrode layer openings (131A, 131B), the second layer electrode width corresponds to a width of the second electrode layer between two of the plurality of second electrode layer openings (131A, 131B), the photoionization detector being characterized in that: the insulation spacer component defines a plurality of insulation spacer openings (137A, 137B), an insulation spacer width corresponds to a width of the insulation spacer component between two of the plurality of insulation spacer openings (137A, 137B), and the insulation spacer width is larger than the first layer electrode width. the insulation spacer component defines a plurality of insulation spacer openings (137A, 137B), an insulation spacer width corresponds to a width of the insulation spacer component between two of the plurality of insulation spacer openings (137A, 137B), and the insulation spacer width is larger than the first layer electrode width.