  Spintronic diodes are emerging as disruptive candidates for impacting several
technological applications ranging from the Internet of Things to Artificial
Intelligence. In this letter, an overview of the recent achievements on
spintronic diodes is briefly presented, underling the major breakthroughs that
have led these devices to have the largest sensitivity measured up to date for
a diode. For each class of spintronic diodes (passive, active, resonant,
non-resonant), we indicate the remaining developments to improve the
performances as well as the future directions. We also dedicate the last part
of this perspective to new ideas for developing spintronic diodes in
multiphysics systems by combining 2-dimensional materials and antiferromagnets.
