Photoelectric conversion element, and solar cell using the same

A photoelectric conversion element, comprising:

• a first electrode that includes a photosensitive layer, which includes a light absorbing agent, on a conductive support;
• and
• a second electrode that is opposite to the first electrode,
• wherein the light absorbing agent includes a compound having a perovskite-type crystal structure that includes a cation of an element of Group 1 in the periodic table or a cationic organic group A, a cation of a metal atom M other than the element of Group 1 in the periodic table, and an anion of an anionic atom or atomic group X,
• a hole transport layer, which includes a hole transporting material, is provided between the first electrode and the second electrode,
• the hole transporting material includes at least one kind of compound represented by any one of Formula 1 to Formula 16, including a condensed polycyclic aromatic group having a number of rings of 4 or greater,
• at least two rings in the condensed polycyclic aromatic group are hetero rings including at least one atom selected from the group consisting of a sulfur atom, a nitrogen atom, a selenium atom, and an oxygen atom, and
• the condensed polycyclic aromatic group includes at least one structure selected from the group consisting of a benzene ring, a naphthalene ring, an anthracene ring, and a phenanthrene ring as a partial structure,
• in Formula 1, A1a and A1b each independently represent a S atom, an O atom, or a Se atom, and R1a to R1f each independently represent a hydrogen atom or a substituent group,
• in Formula 2, X2a and X2b each independently represent NR2i, an O atom, or a S atom, A2a represents CR2g or a N atom, A2b represents CR2h or a N atom, and R2a to R2i each independently represent a hydrogen atom or a substituent group,
• in Formula 3, X3a and X3b each independently represent a S atom, an O atom, or NR3g, A3a and A3b each independently represent CR3h or a N atom, and R3a to R3h each independently represent a hydrogen atom or a substituent group,
• in Formula 4, X4a and X4b each independently represent an O atom, a S atom, or a Se atom, 4p and 4q each independently represent an integer of 0 to 2, and R4a to R4j, R4k, and R4m each independently represent a hydrogen atom or a substituent group,
• in Formula 5, X5a and X5b each independently represent NR5i, an O atom, or a S atom, A5a represents CR5g or a N atom, A5b represents CR5h or a N atom, and R5a to R5i each independently represent a hydrogen atom or a substituent group,
• in Formula 6, X6a to X6d each independently represent NR6g, an O atom, or a S atom, and R6a to R6g each independently represent a hydrogen atom or a substituent group,
• in Formula 7, X7a and X7c each independently represent a S atom, an O atom, a Se atom, or NR7i, X7b and X7d each independently represent a S atom, an O atom, or a Se atom, and R7a to R7i each independently represent a hydrogen atom or a substituent group,
• in Formula 8, X8a and X8c each independently represent a S atom, an O atom, a Se atom, or NR8i, X8b and X8d each independently represent a S atom, an O atom, or a Se atom, and R8a to R8i each independently represent a hydrogen atom or a substituent group,
• in Formula 9, X9a and X9b each independently represent an O atom, a S atom, or a Se atom, and R9a to R9j each independently represent a hydrogen atom or a substituent group,
• in Formula NR10i, X10 a and X10b each independently represent a S atom, an O atom, a Se atom, or NR10i, and R10a to R10i each independently represent a hydrogen atom or a substituent group,
• in Formula 11, X11a and X11b each independently represent a S atom, an O atom, a Se atom, or NR11n, and R11a to R11k, R11m, and R11n each independently represent a hydrogen atom or a substituent group,
• in Formula 12, X12a and X12b each independently represent a S atom, an O atom, a Se atom, or NR12n, and R12a to R12k, R12m, and R12n each independently represent a hydrogen atom or a substituent group,
• in Formula 13, X13a and X13b each independently represent a S atom, an O atom, a Se atom, or NR13n, and R13a to R13k, R13m, and R13n each independently represent a hydrogen atom or a substituent group,
• in Formula 14, X14a to X14c each independently represent a S atom, an O atom, a Se atom, or NR14i, and R14a to R14i each independently represent a hydrogen atom or a substituent group,
• in Formula 15, X15a to X15d each independently represent a S atom, an O atom, a Se atom, or NR15g, and R15a to R15g each independently represent a hydrogen atom or a substituent group, and
• in Formula 16, X16a to X16d each independently represent a S atom, an O atom, a Se atom, or NR16g, and R16a to R16g each independently represent a hydrogen atom or a substituent group, and
• wherein at least one of R1a to R1f in Formula 1, at least one of R2a to R2i in Formula 2, at least one of R3a to R3h in Formula 3, at least one of R4a to R4j, R4k, and R4m in Formula 4, at least one of R5a to R5i in Formula 5, at least one of R6a to R6g in Formula 6, at least one of R7a to R7i in Formula 7, at least one of R8a to R8i in Formula 8, at least one of R9a to R9j in Formula 9, at least one of R10a to R10h in Formula 10, at least one of R11a to R11k, R11m, and R11n in Formula 11, at least one of R12a to R12k, R12m, and R12n in Formula 12, at least one of R13a to R13k, R13m, and R13n in Formula 13, at least one of R14a to R14i in Formula 14, at least one of R15a to R15g in Formula 15, and at least one of R16a to R16g in Formula 16 are groups represented by the following Formula W,
• -LW-RW (W)
• in Formula W, LW represents a divalent linking group represented by any one of the following Formulae L-1 to L-25, or a divalent linking group in which two or more divalent linking groups each being represented by any one of the following Formulae L-1 to L-25 are bonded to each other, and RW represents a hydrogen atom or a substituent group,
• in Formulae L-1 to L-25, * represents a bonding position with RW, a wavy-line portion represents another bonding position, R's in Formula L-1, Formula L-2, Formula L-6, and Formula L-13 to Formula L-24 each independently represent a hydrogen atom or a substituent group, RNs represent a hydrogen atom or a substituent group, and Rsis each independently represent a hydrogen atom, an alkyl group, an alkenyl group, or an alkynyl group,
• with the proviso that when the hole transporting material is a compound represented by Formula 10, R10a to R10h do not include a linking group represented by Formula L-1 that is directly bonded to a ring.