Thin film and method for producing same, circularly polarized light detection element, device and method

A method for inducing an R- or S-arranged chiral structure for a perovskite structure of a perovskite type substance including a plurality of inorganic layers constituting a layered structure and/or a plurality of inorganic chains constituting a chain structure, the method comprising

• a step in which only one of S-form chiral molecules and R-form chiral molecules or chiral molecules with a higher abundance proportion of one of S-form chiral molecules and R-form chiral molecules than an abundance proportion of the other of S-form chiral molecules and R-form chiral molecules are incorporated in at least a part of a boundary part between the adjacent inorganic layers and/or between the inorganic chains contained in the perovskite type substance so that the crystal structure of the perovskite type substance is oriented in a predetermined direction.

A thin film formed of a perovskite type substance and imparted with chirality,

• wherein the thin film includes a plurality of inorganic layers constituting a layered structure and/or a plurality of inorganic chains constituting a chain structure, and only one of S-form chiral molecules and R-form chiral molecules, or
• chiral molecules with a higher abundance proportion of one of S-form chiral molecules and R-form chiral molecules than an abundance proportion of the other of S-form chiral molecules and R-form chiral molecules which are incorporated in at least a part of a boundary part between the adjacent inorganic layers and/or between the inorganic chains, and
• wherein the crystal structure of the perovskite type substance is oriented in a predetermined direction.