Semiconductor film and method of producing the same, photoelectric conversion element, solid-state imaging element and electronic apparatus
To provide a semiconductor film capable of realizing further enhancement of photoelectric conversion efficiency. The semiconductor film includes semiconductor nanoparticles and a compound represented by the following general formula (1), in which the compound represented by the general formula (1) is coordinated to the semiconductor nanoparticles. (In the general formula (1), X represents —SH, —COOH, —NH 2 , —PO(OH) 2 , or —SO 2 (OH), A 1 represents —S, —COO, —PO(OH)O, or —SO 2 (O), and n is an integer of 1 to 3. B 1 represents Li, Na, or K.)
1. A semiconductor film, comprising:
semiconductor nanoparticles and a compound represented by the following general formula (1):
(in the general formula (1), X represents —COOH, —NH 2 , —PO(OH) 2 , or —SO 2 (OH), A 1 represents —S, —PO(OH)O, or —SO 2 (O), and n is an integer of 1 to 3; B 1 represents Li or K),
wherein the compound represented by the general formula (1) is coordinated to the semiconductor nanoparticles.
2. The semiconductor film according to claim 1 , wherein the semiconductor nanoparticles selectively absorb at least light in a visible region.
3. The semiconductor film according to claim 1 , wherein the semiconductor nanoparticles selectively absorb at least light in an infrared region.
4. The semiconductor film according to claim 1 , wherein the semiconductor nanoparticles include at least one of TiO 2 , ZnO, WO 3 , NiO, MoO 3 , CuO, GazO 3 , SrTiO 3 , SnO 2 , InSnOx, NB 2 O 3 , MnO 2 , V 2 O 3 , CrO, CuInSe 2 , CuInS 2 , AgInS 2 , Si, PbS, PbSe, PbTe, CdS, CdSe, CdTe, Fe 2 O 3 , GaAs, GaP, InP, InAs, Ge, In 2 S 3 , Bi 2 S 3 , ZnSe, ZnTe, or ZnS.
5. The semiconductor film according to claim 1 , wherein a particle diameter of the semiconductor nanoparticle is 2 to 20 nm.
6. The semiconductor film according to claim 1 , wherein a shape of the semiconductor nanoparticle is a sphere, an ellipsoid, or a triangular prism.
7. The semiconductor film according to claim 1 , wherein the semiconductor nanoparticles for red light include PbSe, CdTe, PbS, Si, PbTe, CdSe, CuInSe 2 , CuInS 2 , AgInS 2 , MnO 2 , V 2 O 3 , CrO, GaAs, Fe 2 O 3 , InP, InAs, Ge, Bi 2 S 3 or CuO.
8. The semiconductor film according to claim 1 , wherein the semiconductor nanoparticles for green light include CdS, GaP or ZnTe.
9. The semiconductor film according to claim 1 , wherein the semiconductor nanoparticles for blue light include WO 3 , ZnSe or In 2 S 3 .