Described are high energy light blocking compounds and ophthalmic devices containing the compounds. In particular, described are hydroxyphenyl naphthotriazole structures with polymerizable functionality that block high energy light and are visibly transparent. The hydroxyphenyl naphthotriazole structures can be incorporated into ophthalmic devices, such as hydrogel contact lenses, to protect eyes from high energy light radiation.

Described are high energy light blocking compounds and ophthalmic devices containing the compounds. In particular, described are hydroxyphenyl naphthotriazole structures with polymerizable functionality that block high energy light and are visibly transparent. The hydroxyphenyl naphthotriazole structures can be incorporated into ophthalmic devices, such as hydrogel contact lenses, to protect eyes from high energy light radiation.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts on basis of benzotriazoles, which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (?E.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts on basis of benzotriazoles, which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (?E.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts on basis of benzotriazoles, which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (?E.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts on basis of benzotriazoles, which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (E.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts on basis of benzotriazoles, which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (E.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

The present disclosure provides a light conversion agent, a light conversion adhesive film composition, a light conversion adhesive film, and a photovoltaic module. The light conversion agent is a naphthotriazole compound, the naphthotriazole compound has the structural general formula as shown as follows:

##STR00001##

wherein, i is any integer from 0 to 100; R.sub.1 and R.sub.1 are selected from the substituent of a substituted or unsubstituted C.sub.1-C.sub.20 alkyl, etc., and R.sub.2, R.sub.3, R.sub.4 and R.sub.4 are each independently selected from the substituent of H, or a substituted or unsubstituted C.sub.1-C.sub.20 alkyl, etc. The naphthotriazole ring can often exhibit a broader band of absorption. The light conversion adhesive film obtained by using the light conversion adhesive film composition of this disclosure has excellent light stability and high luminous efficiency, which can effectively function in the long term, thereby improving the service life of the photovoltaic devices (such as photovoltaic modules).

The present disclosure provides a light conversion agent, a light conversion adhesive film composition, a light conversion adhesive film, and a photovoltaic module. The light conversion agent is a naphthotriazole compound, the naphthotriazole compound has the structural general formula as shown as follows:

##STR00001##

wherein, i is any integer from 0 to 100; R.sub.1 and R.sub.1 are selected from the substituent of a substituted or unsubstituted C.sub.1-C.sub.20 alkyl, etc., and R.sub.2, R.sub.3, R.sub.4 and R.sub.4 are each independently selected from the substituent of H, or a substituted or unsubstituted C.sub.1-C.sub.20 alkyl, etc. The naphthotriazole ring can often exhibit a broader band of absorption. The light conversion adhesive film obtained by using the light conversion adhesive film composition of this disclosure has excellent light stability and high luminous efficiency, which can effectively function in the long term, thereby improving the service life of the photovoltaic devices (such as photovoltaic modules).