120
I. Osaka
36. Osaka, I., Shimawaki, M., Mori, H., Doi, I., Miyazaki, E., Koganezawa, T., Takimiya,
K.: Synthesis, characterization, and transistor and solar Cell applications of a
naphthobisthiadiazole-based semiconducting polymer. J. Am. Chem. Soc. 134, 3498–3507
(2012)
37. Mataka, S., Takahashi, K., Ikezaki, Y., Hatta, T., Tori-i, A., Tashiro, M.: Sulfur nitride in organic
chemsitry. XIV, selective formation of benzo-and benzobis [1,2,5]thiadiazole skeleton in the
reaction of tetrasulfur tetranitride with naphthalenols and related compounds. Bull. Chem. Soc.
Jpn. 64, 68–73 (1991)
38. Osaka, I., Takimiya, K.: Naphthobischalcogenadiazole conjugated polymers: emerging materials for organic electronics. Adv. Mater. 39, 1605218 (2017)
39. Rieger, R., Beckmann, D., Mavrinskiy, A., Kastler, M., Müllen, K.: Backbone curvature in
polythiophenes. Chem. Mater. 22, 5314–5318 (2010)
40. Osaka, I., Abe, T., Shinamura, S., Takimiy, K.: Impact of isomeric structures on transistor
performances in naphthodithiophene semiconducting polymers. J. Am. Chem. Soc. 133, 6852–
6860 (2011)
41. Veldman, D., Meskers, S.C.J., Janssen, R.A.J.: The energy of charge-transfer states in electron
donor–acceptor blends: insight into the energy losses in organic solar cells. Adv. Funct. Mater.
19, 1939–1948 (2009)
42. King, R.R., Bhusari, D., Boca, A., Larrabee, D., Liu, X.Q., Hong, W., Fetzer, C.M., Law, D.C.,
Karam, N.H.: Band gap-voltage offset and energy production in next-generation multijunction
solar cells. Prog. Photovolt 19, 797–812 (2011)
43. Wang, M., Wang, H., Yokoyama, T., Liu, X., Huang, Y., Zhang, Y., Nguyen, T.Q., Aramaki, S.,
Bazan, G.C.: High open circuit voltage in regioregular narrow band gap polymer solar cells. J.
Am. Chem. Soc. 136, 12576–12579 (2014)
44. Green, M.A., Ho-Baillie, A., Snaith, H.J.: The emergence of perovskite solar cells. Nat. Photon
8, 506–514 (2014)
45. Scharber, M.C., Mühlbacher, D., Koppe, M., Denk, P., Waldauf, C., Heeger, A.J., Brabec, C.J.:
Design rules for donors in bulk-heterojunction solar cells –towards 10% energy-conversion
efficiency. Adv. Mater. 18, 789–794 (2006)
46. Dimitrov, S.D., Durrant, J.R.: Materials design considerations for charge generation in organic
solar cells. Chem. Mater. 26, 616–630 (2014)
47. Zhou, H., Yang, L., Stuart, A.C., Price, S.C., Liu, S., You, W.: Development of fluorinated
benzothiadiazole as a structural unit for a polymer solar cell of 7% efficiency. Angew. Chem.
Int. Ed. 50, 2995–2998 (2011)
48. Kawashima, K., Fukuhara, T., Suda, Y., Suzuki, Y., Koganezawa, T., Yoshida, H., Ohkita,
H., Osaka, I., Takimiya, K.: Implication of Fluorine Atom on Electronic Properties, Ordering
Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting
Polymers. J. Am. Chem. Soc. 138, 10265–10275 (2016)
49. Saito, M., Fukuhara, T., Kamimura, S., Ichikawa, H., Yoshida, H., Koganezawa, T., Ie, Y.,
Tamai, Y., Kim, H.-D., Ohkita, H., Osaka, I.: Impact of noncovalent sulfur–fluorine interaction position on properties, structures, and photovoltaic performance in naphthobisthiadiazolebased semiconducting polymers. Adv Energy Mater 10, 1903278 (2020)
50. Yoshida, H.: Principle and application of low energy inverse photoemission spectroscopy: a
new method for measuring unoccupied states of organic semiconductors. J. Electron Spectrosc.
Relat. Phenom. 204, 116–124 (2015)
51. Kawashima, K., Tamai, Y., Ohkita, H., Osaka, I., Takimiya, K.: High-efficiency polymer solar
cells with small photon energy loss. Nat. Commun. 6, 10085 (2015)
52. Brédas, J.L., Norton, J.E., Cornil, J., Coropceanu, V.: Molecular understanding of organic solar
cells: the challenges. Acc. Chem. Res. 42, 1691–1699 (2009)
53. Brédas, J.L.: Mind the gap! Mater. Horiz. 1, 17–19 (2014)
54. Vandewal, K., Tvingstedt, K., Gadisa, A., Inganäs, O., Manca, J.V.: On the origin of the opencircuit voltage of polymer-fullerene solar cells. Nat. Mater. 8, 904–909 (2009)
55. Vandewal, K., Ma, Z., Bergqvist, J., Tang, Z., Wang, E., Henriksson, P., Tvingstedt, K., Andersson, M.R., Zhang, F., Inganäs, O.: Quantification of quantum efficiency and energy losses in
I. Osaka
36. Osaka, I., Shimawaki, M., Mori, H., Doi, I., Miyazaki, E., Koganezawa, T., Takimiya,
K.: Synthesis, characterization, and transistor and solar Cell applications of a
naphthobisthiadiazole-based semiconducting polymer. J. Am. Chem. Soc. 134, 3498–3507
(2012)
37. Mataka, S., Takahashi, K., Ikezaki, Y., Hatta, T., Tori-i, A., Tashiro, M.: Sulfur nitride in organic
chemsitry. XIV, selective formation of benzo-and benzobis [1,2,5]thiadiazole skeleton in the
reaction of tetrasulfur tetranitride with naphthalenols and related compounds. Bull. Chem. Soc.
Jpn. 64, 68–73 (1991)
38. Osaka, I., Takimiya, K.: Naphthobischalcogenadiazole conjugated polymers: emerging materials for organic electronics. Adv. Mater. 39, 1605218 (2017)
39. Rieger, R., Beckmann, D., Mavrinskiy, A., Kastler, M., Müllen, K.: Backbone curvature in
polythiophenes. Chem. Mater. 22, 5314–5318 (2010)
40. Osaka, I., Abe, T., Shinamura, S., Takimiy, K.: Impact of isomeric structures on transistor
performances in naphthodithiophene semiconducting polymers. J. Am. Chem. Soc. 133, 6852–
6860 (2011)
41. Veldman, D., Meskers, S.C.J., Janssen, R.A.J.: The energy of charge-transfer states in electron
donor–acceptor blends: insight into the energy losses in organic solar cells. Adv. Funct. Mater.
19, 1939–1948 (2009)
42. King, R.R., Bhusari, D., Boca, A., Larrabee, D., Liu, X.Q., Hong, W., Fetzer, C.M., Law, D.C.,
Karam, N.H.: Band gap-voltage offset and energy production in next-generation multijunction
solar cells. Prog. Photovolt 19, 797–812 (2011)
43. Wang, M., Wang, H., Yokoyama, T., Liu, X., Huang, Y., Zhang, Y., Nguyen, T.Q., Aramaki, S.,
Bazan, G.C.: High open circuit voltage in regioregular narrow band gap polymer solar cells. J.
Am. Chem. Soc. 136, 12576–12579 (2014)
44. Green, M.A., Ho-Baillie, A., Snaith, H.J.: The emergence of perovskite solar cells. Nat. Photon
8, 506–514 (2014)
45. Scharber, M.C., Mühlbacher, D., Koppe, M., Denk, P., Waldauf, C., Heeger, A.J., Brabec, C.J.:
Design rules for donors in bulk-heterojunction solar cells –towards 10% energy-conversion
efficiency. Adv. Mater. 18, 789–794 (2006)
46. Dimitrov, S.D., Durrant, J.R.: Materials design considerations for charge generation in organic
solar cells. Chem. Mater. 26, 616–630 (2014)
47. Zhou, H., Yang, L., Stuart, A.C., Price, S.C., Liu, S., You, W.: Development of fluorinated
benzothiadiazole as a structural unit for a polymer solar cell of 7% efficiency. Angew. Chem.
Int. Ed. 50, 2995–2998 (2011)
48. Kawashima, K., Fukuhara, T., Suda, Y., Suzuki, Y., Koganezawa, T., Yoshida, H., Ohkita,
H., Osaka, I., Takimiya, K.: Implication of Fluorine Atom on Electronic Properties, Ordering
Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting
Polymers. J. Am. Chem. Soc. 138, 10265–10275 (2016)
49. Saito, M., Fukuhara, T., Kamimura, S., Ichikawa, H., Yoshida, H., Koganezawa, T., Ie, Y.,
Tamai, Y., Kim, H.-D., Ohkita, H., Osaka, I.: Impact of noncovalent sulfur–fluorine interaction position on properties, structures, and photovoltaic performance in naphthobisthiadiazolebased semiconducting polymers. Adv Energy Mater 10, 1903278 (2020)
50. Yoshida, H.: Principle and application of low energy inverse photoemission spectroscopy: a
new method for measuring unoccupied states of organic semiconductors. J. Electron Spectrosc.
Relat. Phenom. 204, 116–124 (2015)
51. Kawashima, K., Tamai, Y., Ohkita, H., Osaka, I., Takimiya, K.: High-efficiency polymer solar
cells with small photon energy loss. Nat. Commun. 6, 10085 (2015)
52. Brédas, J.L., Norton, J.E., Cornil, J., Coropceanu, V.: Molecular understanding of organic solar
cells: the challenges. Acc. Chem. Res. 42, 1691–1699 (2009)
53. Brédas, J.L.: Mind the gap! Mater. Horiz. 1, 17–19 (2014)
54. Vandewal, K., Tvingstedt, K., Gadisa, A., Inganäs, O., Manca, J.V.: On the origin of the opencircuit voltage of polymer-fullerene solar cells. Nat. Mater. 8, 904–909 (2009)
55. Vandewal, K., Ma, Z., Bergqvist, J., Tang, Z., Wang, E., Henriksson, P., Tvingstedt, K., Andersson, M.R., Zhang, F., Inganäs, O.: Quantification of quantum efficiency and energy losses in
