A photoelectric device is disclosed. The photoelectric device includes a first electrode, a second electrode, and an electrolyte disposed between the first electrode and the second electrode. The second electrode includes a transparent layer for allowing light to penetrate into the second electrode, an electron transport layer coupled to the transparent layer, and a genetically hybridized fluorescent silk layer as a photo-sensitizer coupled to the electron transport layer.

Organic light-emitting diodes are disclosed comprising an electron transport layer and a hole transport layer. At least one of the transport layers is formed by (a) dissolving tubulin or microtubules in a mixture of water and a solvent that changes the surface charge of tubulin, wherein the percentage of solvent in the mixture is selected so that the tubulin acquires a desired surface charge, and (b) using the tubulin with the desired surface charge to fabricate the at least one of the transport layers. Advantageously, the solvent may be DMSO. Methods of fabricating such organic light emitting diodes are also disclosed.

A method of disinfection of a surface of a subject of harmful microorganisms including pathogenic bacteria and viruses upon visible light irradiation using a hybridized fluorescent silk is provided. The method includes placing a predetermined quantity of the hybridized fluorescent silk i) directly on to a skin surface of a subject; or ii) on a medium and then placing the medium on the skin surface of the subject. The method further includes applying light in the visible spectrum for a predetermined amount of time to the placed quantity of hybridized fluorescent silk, wherein the hybridized fluorescent silk is one of KillerRed, SuperNova, KillerOrange, Dronpa, TurboGFP, mCherry, or any combination thereof.

Provided are devices and methods to detect the presence of volatile organic compounds related to the presence of a disease state in a biological sample. The devices may include a detection moiety such as a polynucleotide in electronic communication with a semiconductor such as graphene or a carbon nanotube.

Proposed are an organic electrochemical transistor device and a manufacturing method for same, the organic electrochemical transistor device comprising: a substrate; a source electrode and a drain electrode, formed on an upper surface of the substrate; and a poly(hydroxymethyl-EDOT) polymer active layer formed on the upper surface of the substrate and electrically in contact with the source electrode and the drain electrode. According to the embodiment, an organic electrochemical transistor device with high sensitivity characteristics and desirable aqueous solution stability and mechanical stability can be provided.

Provided is a quantum dot light-emitting device and a display apparatus including the same. The quantum dot light-emitting device comprises: an anode; a cathode; a hole transport layer disposed between the anode and the cathode; a light-emitting layer disposed between the hole transport layer and the cathode, the light-emitting layer including a quantum dot having a core-shell structure; and a buffer layer disposed between the hole transport layer and the light-emitting layer, wherein the buffer layer contains an organic compound or derivatives thereof. The external quantum efficiency and device stability are improved. an aromatic hydrocarbon compound or derivatives thereof having a functional group selected from the group consisting of a hydroxyl group (—OH), a carboxyl group (—COOH), an amino group (—NR, —NH, —NH.sub.2, where R is a C1 to C6 monovalent hydrocarbon group or derivatives thereof) and a thiol group (—SH).

The present disclosure relates to a method of manufacturing a semiconductor material including a cellulose nanocrystal. Particularly, according to the present disclosure, by attaching an electron withdrawing group to the surface of the cellulose nanocrystal, which is a nonconductor, holes are formed in the doped cellulose nanocrystal, and the cellulose nanocrystal may be used as a semiconductor material.

Embodiments relate to a light-harvesting perovskite layer including having deoxyribonucleic acid (DNA) molecules incorporated within the perovskite crystal to serve as an effective carrier transport medium. Some embodiments include formation of a DNA doped MAPbI.sub.3, the DNA doped MAPbI.sub.3 being formed by using a DNA-hexadecyl trimethyl ammonium chloride (“DNA-CTMA”) complex. The DNA doped MAPbI.sub.3 can be used as the light-harvesting perovskite layer in a photovoltaic device. Other molecules such as artemisinin (ART) and melanin are also demonstrated to show the effectiveness in charge and thermal transport.

A soft conductive composite composition can include a soft matrix containing a conductive member that is associated with a bioactive component. The soft matrix can be formed from a silicone composition. The conductive member can be carbon nanotubes in the silicone composition. The carbon nanotubes can have at least two walls and be conductive. Also, the carbon nanotubes can be a mixture of functionalized carbon nanotubes and non-functionalized carbon nanotubes, which mixture can have a ratio of 1:2 to 1:20 w/w of functionalized to non-functionalized carbon nanotubes per gram of the silicone composition. The bioactive component (e.g., enzyme) can be associated with at least a first portion of the carbon nanotubes. A second portion of the carbon nanotubes can be devoid of the bioactive component.

A biological field-effect transistor (BioFET) includes source and drain regions formed in a substrate, an insulating layer disposed on a surface of the substrate, a gate disposed on the insulating layer and extending between the source and drain regions, a well region containing an electrolyte solution configured to retain an analyte, a three-dimensional (3D) graphene layer forming a channel region in the substrate, and a passivation layer. The graphene layer is biofunctionalized with a molecular recognition element configured to alter one or more electrical properties of the 3D graphene layer in response to exposure of the molecular recognition element to the analyte. The passivation layer is configured to prevent the electrolyte solution from contacting the source and drain. In some aspects, the 3D graphene layer is produced from carbon-containing inks. In other aspects, the 3D graphene layer includes a convoluted 3D structure configured to prevent graphene restacking.