Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).

Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).

Abstract: Disclosed herein are stable organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material having a sufficiently high glass transition temperature, e.g., higher than the temperature or temperature range at which the device typically operates, higher than a highest operating temperature of the device, higher than a threshold temperature value, etc. and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).

Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).

Abstract: An organic light emitting device (OLED) is provided. The OLED includes, an anode; a cathode; and an emissive layer disposed between the anode and the cathode. The emissive layer includes a singlet fission sensitizer and a triplet emitter. The singlet energy of the singlet fission sensitizer is equal to or greater than twice the triplet energy of the singlet fission sensitizer. The triplet energy of the triplet emitter is less than the triplet energy of the singlet fission sensitizer.

Abstract: Disclosed herein are organic photosensitive devices including a first subcell and a second subcell and having at least one exciton-blocking charge carrier filter disposed between the subcells. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).

Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).

Abstract: An electrically powered light source can be constructed with an electroluminescent element operating essentially at room temperature while providing a useful amount of light. A thermal junction located between an OLED and a cover layer of an OLED device is configured to advantageously manage the steady-state temperature of the OLED. The thermal junction may be formed with a thermal resistance of 0.2 m2·K/W or less. A distance across the junction may be 2 mm or less, and/or the junction may include a layer of material having a thermal conductivity of 0.1 W/m·K or greater.

Abstract: An organic light emitting device (OLED) is provided. The OLED includes, an anode; a cathode; and an emissive layer disposed between the anode and the cathode. The emissive layer includes a singlet fission sensitizer and a triplet emitter. The singlet energy of the singlet fission sensitizer is equal to or greater than twice the triplet energy of the singlet fission sensitizer. The triplet energy of the triplet emitter is less than the triplet energy of the singlet fission sensitizer.