THIN-FILM PHOTOVOLTAIC CELL, THIN-FILM PHOTOVOLTAIC MODULE AND METHOD OF MANUFACTURING THIN-FILM PHOTOVOLTAIC CELL
A method of manufacturing a thin-film photovoltaic cell, comprises laminating a transparent electrode on a transparent substrate, laminating a photovoltaic layer on the transparent electrode, laminating a metal electrode layer on the photovoltaic layer and laminating a buffer layer on the metal electrode layer, the buffer layer being made of a moisture resistance material.
1 . A method of manufacturing a thin-film photovoltaic cell, comprising:
laminating a transparent electrode on a transparent substrate;
laminating a photovoltaic layer on the transparent electrode;
laminating a metal electrode layer on the photovoltaic layer; and
laminating a buffer layer on the metal electrode layer, the buffer layer being made of a moisture resistance material.
2 . The method according to claim 1 , further comprising forming an isolation trench from a surface of the buffer layer to a surface of the transparent electrode using laser.
3 . The method according to claim 1 , further comprising laminating a rear reflective layer comprising zinc oxide between the photovoltaic layer and the metal electrode layer.
4 . The method according to claim 3 , wherein the rear reflective layer is laminated using a metal-organic chemical vapor deposition (MOCVD) method or a low pressure chemical vapor deposition (LPCVD) method.
5 . The method according to claim 3 , wherein the rear reflective layer has a thickness of 50 nm to 2500 nm.
6 . The method according to claim 1 , wherein the buffer layer has a thickness of 50 nm to 1000 nm.
7 . The method according to claim 1 , wherein the moisture resistance material comprises indium tin oxide (ITO), tin oxide (SnO 2 ) or indium zinc oxide (IZO).
8 . The method according to claim 1 , wherein the buffer layer is doped with an impurity.
9 . A thin-film photovoltaic cell, comprising:
a transparent electrode laminated on a transparent substrate;
a photovoltaic layer laminated on the transparent electrode;
a metal electrode layer laminated on the photovoltaic layer; and
a buffer layer laminated on the metal electrode layer, the buffer layer comprising a moisture resistance material.
10 . The thin-film photovoltaic cell according to claim 9 , wherein the buffer layer has a thickness of 50 nm to 1000 nm.
11 . The thin-film photovoltaic cell according to claim 9 , wherein the moisture resistance material comprises indium tin oxide (ITO), tin oxide (SnO 2 ) or indium zinc oxide (IZO).
12 . The thin-film photovoltaic cell according to claim 9 , further comprising a rear reflective layer comprising zinc oxide (ZnO) between the photovoltaic layer and the metal electrode layer.
13 . The thin-film photovoltaic cell according to claim 12 , wherein the rear reflective layer has a thickness of 50 to 2500 nm.
14 . The thin-film photovoltaic cell according to claim 9 , wherein the buffer layer is doped with an impurity.
15 . A thin-film photovoltaic module, comprising:
a transparent electrode laminated on a transparent substrate;
a photovoltaic layer laminated on the transparent electrode;
a metal electrode layer laminated on the photovoltaic layer;
a buffer layer laminated on the metal electrode layer, the buffer layer comprising a moisture resistance material; and
an encapsulating member encapsulating the transparent electrode, the photovoltaic layer, the metal electrode layer and the buffer layer.
16 . The thin-film photovoltaic module according to claim 15 , wherein the buffer layer has a thickness of 50 to 1000 nm.
17 . The thin-film photovoltaic module according to claim 15 , wherein the moisture resistance material comprises indium tin oxide (ITO), tin oxide (SnO 2 ) or indium zinc oxide (IZO).
18 . The thin-film photovoltaic module according to claim 15 , wherein the encapsulating member comprises an ethylene vinyl acetate (EVA) film and a low iron content tempered glass, partially encapsulating the thin-film photovoltaic cell.
19 . The thin-film photovoltaic module according to claim 15 , wherein the encapsulating member comprises an EVA film and a back sheet.
20 . The thin-film photovoltaic module according to claim 19 , wherein the back sheet has a TPT structure in which a poly-vinyl fluoride (PVF) film, a poly-ethylene terephthalate (PET) film and a poly-vinyl fluoride (PVF) film are sequentially laminated or a TPT structure in which a poly-vinylidene fluoride (PVDF) film, a poly-ethylene terephthalate (PET) film and a poly-vinylidene fluoride (PVDF) film are sequentially laminated.
21 . The thin-film photovoltaic module according to claim 20 , wherein the back sheet has a structure in which an aluminum (Al) foil is interposed between the films constituting the TPT structure.