Abstract:
본 발명은 광흡수층을 금속유도 측면 결정화(MILC) 방법을 이용하여 오염이 없는 다결정 실리콘을 형성하고, 얻어진 다결정 실리콘을 결정화 씨드로 사용하는 금속유도 수직 결정화(MIVC) 방법을 이용하여 그레인의 성장방향을 전자와 홀의 전송방향을 따라 수직방향으로 형성함에 의해 전자와 홀이 재결합하는 사이트로 작용하는 그레인 바운더리를 최소화하여 태양전지의 효율을 높일 수 있는 다결정 실리콘 태양전지의 광흡수층 제조방법, 이를 이용한 고효율 다결정 실리콘 태양전지 및 그의 제조방법에 관한 것이다. 본 발명의 광흡수층은 다결정 실리콘 태양전지의 광흡수층이 (a) 후면전극 상에 다결정 실리콘층을 형성하는 단계; (b) 상기 다결정 실리콘층 위에 진성 비정질 실리콘층을 형성하는 단계; 및 (c) 상기 기판을 열처리하여 상기 다결정 실리콘층을 결정화 씨드로 사용하여 진성 비정질 실리콘층을 금속유도 수직 결정화(MIVC)에 의해 수직방향으로 결정화하여 다결정 실리콘으로 이루어진 광흡수층을 형성하는 단계를 포함하는 공정에 의해 제조된다. MIC, MILC, MIVC, 다결정 실리콘, 재결합, 태양전지
Abstract:
A method for manufacturing a light-absorbing layer of a polycrystalline silicon solar cell, a high efficient polycrystalline silicon solar cell using the same, and a manufacturing method thereof are provided to enhance productivity by crystallizing simultaneously a plurality of sheets of substrates without damage at low temperature. A rear electrode(20) is formed on a transparent insulating substrate(10). An amorphous silicon layer is formed on the rear electrode. A plurality of catalytic metal patterns are formed in a constant interval on the amorphous silicon in order to perform a low temperature crystallization process. A first thermal process is performed to form the amorphous silicon under the catalytic metal patterns as polycrystalline silicon according to MIC(Metal Induced Crystallization). The exposed amorphous silicon is crystallized as the polycrystalline silicon according to MILC(Metal Induced Lateral Crystallization). A first conductive type polycrystalline silicon layer(30b) is formed by implanting a first conductive type impurity into the polycrystalline silicon. An intrinsic amorphous silicon layer is formed on the first conductive type polycrystalline silicon layer. A second conductive type impurity is implanted in the intrinsic amorphous silicon layer in the predetermined depth. A second thermal process is performed to crystallize the intrinsic amorphous silicon layer in a vertical direction according to MIVC(Metal Induced Vertical Crystallization). The intrinsic amorphous silicon layer is defined as a light-absorbing layer(90a) and a second conductive type polycrystalline silicon layer(100). A transparent electrode layer(130) is deposited on the second conductive type polycrystalline silicon layer. A front electrode(140) is formed on the transparent electrode layer. An anti-reflective coating layer(150) is formed to surround the front electrode and the transparent electrode layer.
Abstract:
PURPOSE: A manufacturing method of an electrode is provided to reduce the internal resistance between a metal current collector and an electrode active material through two heat treatment processes and to improve the output performance of an electrode by improving electrochemical stability in an electrode material. CONSTITUTION: A manufacturing method of an electrode for a lithium secondary battery comprises a step of manufacturing a slurry mixture by mixing an active material powder, a binder powder, and a conducting powder; a step of making the mixture penetrate into the inner pores of metal foam, conducting a first heat treatment, and forming an electrode layer; a step of a pressing the electrode layer; and a step of conducting a second heat treatment under a reduction atmosphere. [Reference numerals] (S1) Step of manufacturing a slurry mixture by mixing an active material powder, a binder powder, and a conducting powder; (S2) Step of producing a electrode layer by first heating processing after penetrating the mixture of the S1 step inside a gap of the foaming metal; (S3) Step of pressuring the electrode layer produces in the S2 step; (S4) Step of conducting a second heat treatment of the electrode layer produced in the S3 step under a reduction atmosphere
Abstract:
PURPOSE: A carbon nanotube transparent electrode and a manufacturing method thereof are provided to improve the adhesive force of a carbon nanotube transparent electrode by being additionally coated with a solution, where an adhesive and a carbon nanotube are mixed, on a substrate. CONSTITUTION: A carbon nanotube thin film(20) sprays a carbon nanotube dispersion solution onto a substrate. An adhesive film(30) sprays a mixed solution, which contains an adhesive solution and the carbon nanotube dispersion solution, onto the substrate. The adhesive solution is a mixture of a solvent and an adhesive. The substrate(10) is flexible. The mixed ratio of the solvent and the adhesive is 1:10 or 1:30.
Abstract:
본 발명은 금속유도 결정화(MIC) 방법을 이용하여 오염이 없는 다결정 실리콘을 형성하고, 이를 결정화 씨드로 사용하는 금속유도 수직 결정화(MIVC) 방법에 의해 광흡수층의 그레인의 성장방향을 전자와 홀의 전송방향을 따라 수직방향으로 형성함에 의해 그레인 바운더리를 최소화하여 태양전지의 효율을 높일 수 있는 고효율 다결정 실리콘 태양전지 및 그의 제조방법에 관한 것이다. 본 발명은, 투명 절연기판 위에 형성된 후면전극; 비정질 실리콘을 MIC에 의해 결정화되며 전자가 축적되는 n형 다결정 실리콘층; 다결정 실리콘을 결정화 씨드로 사용한 진성 비정질 실리콘층의 MIVC에 의해 수직방향으로 결정화되어 그레인이 입사된 광에 응답하여 전자-홀 쌍을 생성하며 생성된 전자와 홀의 이동경로를 따라 배열된 수직 컬럼 형태의 구조를 갖는 진성 다결정 실리콘으로 이루어지는 광흡수층; 상기 광흡수층과 동일한 방법으로 형성되어 동일한 수직 컬럼 형태의 그레인 구조를 가지며 홀이 축적되는 p형 다결정 실리콘층; 투명 전극층; 전면전극; 및 반사 방지 코팅막을 포함한다. MIC, MIVC, 다결정 실리콘, 광흡수층, 재결합, 태양전지
Abstract:
A method for manufacturing a light-absorbing layer of a polycrystalline silicon solar cell, a high efficient polycrystalline silicon solar cell using the same, and a manufacturing method thereof are provided to form a solar cell having excellent characteristics by crystallizing an amorphous silicon thin film without causing metallic pollution. A polycrystalline silicon solar cell includes a rear electrode(20), an n-type polycrystalline silicon layer(30b), a light-absorbing layer(50a), a p-type polycrystalline silicon layer(60), a transparent electrode layer(70), a front electrode(80), and an anti-reflective coating layer(90). The rear electrode is formed on the transparent insulating substrate(10). The n-type polycrystalline silicon layer is formed on the rear electrode. In the n-type polycrystalline silicon layer, the amorphous silicon is crystallized by MIC(Metal Induced Crystallization). The electrons are accumulated in the n-type polycrystalline silicon layer. The light-absorbing layer is formed on the n-type polycrystalline silicon layer. The light-absorbing layer is formed with intrinsic polycrystalline silicon. The intrinsic polycrystalline silicon is used for generating electron-hole pairs by using a MIVC(Metal Induced Vertical Crystallization). The intrinsic polycrystalline silicon has a vertical column structure. The p-type polycrystalline silicon layer is formed on the light-absorbing layer. The p-type polycrystalline silicon layer has a grain structure of a vertical column type. The holes are accumulated in the p-type polycrystalline layer. The transparent electrode layer is formed on the p-type polycrystalline silicon layer. The front electrode is formed on the transparent electrode layer. The anti-reflective coating layer is formed to surround the front electrode and the transparent electrode layer.