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(Color online) (a) Schematic drawing of the operation of an LET showing enhanced hole injection into active region by an anode-to-anode bias. (b) Photo of an LET with interdigitated anode fingers.
(Color online) Efficiency versus cathode current for LETs under various anode-to-anode biases.
(Color online) (a) Illustration of effective area modulation of the active region of an LET with the linear voltage variation approximation. Top view of the lit-up LETs under different anode-to-anode voltages: (b) 0 V and (c) 4 V.
(Color online) Current density as a function of cathode current with various anode-to-anode biases, calculated under the linear voltage approximation.
(Color online) Efficiency versus drive current density for LETs under different anode-to-anode biases.
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